Pop, soda or coke? The fizzy history behind America’s favorite linguistic debate

Source: The Conversation – USA (2) – By Valerie M. Fridland, Professor of Linguistics, University of Nevada, Reno

‘I’ll have a coke – no, not Coca-Cola, Sprite.’ Justin Sullivan/Getty Images

With burgers sizzling and classic rock thumping, many Americans revel in summer cookouts – at least until that wayward cousin asks for a “pop” in soda country, or even worse, a “coke” when they actually want a Sprite.

Few American linguistic debates have bubbled quite as long and effervescently as the one over whether a generic soft drink should be called a soda, pop or coke.

The word you use generally boils down to where you’re from: Midwesterners enjoy a good pop, while soda is tops in the North and far West. Southerners, long the cultural mavericks, don’t bat an eyelash asking for coke – lowercase – before homing in on exactly the type they want: Perhaps a root beer or a Coke, uppercase.

As a linguist who studies American dialects, I’m less interested in this regional divide and far more fascinated by the unexpected history behind how a fizzy “health” drink from the early 1800s spawned the modern soft drink’s many names and iterations.

Bubbles, anyone?

Foods and drinks with wellness benefits might seem like a modern phenomenon, but the urge to create drinks with medicinal properties inspired what might be called a soda revolution in the 1800s.

Drawing of hexogonal soda fountain with three visible spouts.
An 1878 engraving of a soda fountain.
Smith Collection/Gado via Getty Images

The process of carbonating water was first discovered in the late 1700s. By the early 1800s, this carbonated water had become popular as a health drink and was often referred to as “soda water.” The word “soda” likely came from “sodium,” since these drinks often contained salts, which were then believed to have healing properties.

Given its alleged curative effects for health issues such as indigestion, pharmacists sold soda water at soda fountains, innovative devices that created carbonated water to be sold by the glass. A chemistry professor, Benjamin Stillman, set up the first such device in a drugstore in New Haven, Connecticut, in 1806. Its eventual success inspired a boom of soda fountains in drugstores and health spas.

By the mid-1800s, pharmacists were creating unique root-, fruit- and herb-infused concoctions, such as sassafras-based root beer, at their soda fountains, often marketing them as cures for everything from fatigue to foul moods.

These flavored, sweetened versions gave rise to the linking of the word “soda” with a sweetened carbonated beverage, as opposed to simple, carbonated water.

Seltzer – today’s popular term for such sparkling water – was around, too. But it was used only for the naturally carbonated mineral water from the German town Nieder-Selters. Unlike Perrier, sourced similarly from a specific spring in France, seltzer made the leap to becoming a generic term for fizzy water.

Black and white photo of the interior of a drug store, with various health remedies sold on the right side, and a soda fountain with stools on the left.
Many late-19th-century and early 20th-century drugstores contained soda fountains – a nod to the original belief that the sugary, bubbly drink possessed medicinal qualities.
Hall of Electrical History Foundation/Corbis via Getty Images

Regional naming patterns

So how did “soda” come to be called so many different things in different places?

It all stems from a mix of economic enterprise and linguistic ingenuity.

The popularity of “soda” in the Northeast likely reflects the soda fountain’s longer history in the region. Since a lot of Americans living in the Northeast migrated to California in the mid-to-late 1800s, the name likely traveled west with them.

As for the Midwestern preference for “pop” – well, the earliest American use of the term to refer to a sparkling beverage appeared in the 1840s in the name of a flavored version called “ginger pop.” Such ginger-flavored pop, though, was around in Britain by 1816, since a Newcastle songbook is where you can first see it used in text. The “pop” seems to be onomatopoeic for the noise made when the cork was released from the bottle before drinking.

A jingle for Faygo touts the company’s ‘red pop.’

Linguists don’t fully know why “pop” became so popular in the Midwest. But one theory links it to a Michigan bottling company, Feigenson Brothers Bottling Works – today known as Faygo Beverages – that used “pop” in the name of the sodas they marketed and sold. Another theory suggests that because bottles were more common in the region, soda drinkers were more likely to hear the “pop” sound than in the Northeast, where soda fountains reigned.

As for using coke generically, the first Coca-Cola was served in 1886 by Dr. John Pemberton, a pharmacist at Jacobs’ Pharmacy in Atlanta and the founder of the company. In the 1900s, the Coca-Cola company tried to stamp out the use of “Coke” for “Coca-Cola.” But that ship had already sailed. Since Coca-Cola originated and was overwhelmingly popular in the South, its generic use grew out of the fact that people almost always asked for “Coke.”

Advertisement for orange soda reading 'a soft drink made from real oranges.'
No alcohol means not ‘hard’ but ‘soft.’
Nostalgic Collections/eBay

As with Jell-O, Kleenex, Band-Aids and seltzer, it became a generic term.

What’s soft about it?

Speaking of soft drinks, what’s up with that term?

It was originally used to distinguish all nonalcoholic drinks from “hard drinks,” or beverages containing spirits.

Interestingly, the original Coca-Cola formula included wine – resembling a type of alcoholic “health” drink popular overseas, Vin Mariani. But Pemberton went on to develop a “soft” version a few years later to be sold as a medicinal drink.

Due to the growing popularity of soda water concoctions, eventually “soft drink” came to mean only such sweetened carbonated beverages, a linguistic testament to America’s enduring love affair with sugar and bubbles.

With the average American guzzling almost 40 gallons per year, you can call it whatever you what. Just don’t call it healthy.

The Conversation

Valerie M. Fridland does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Pop, soda or coke? The fizzy history behind America’s favorite linguistic debate – https://theconversation.com/pop-soda-or-coke-the-fizzy-history-behind-americas-favorite-linguistic-debate-259114

The first fossil thrips in Africa: this tiny insect pest met its end in a volcanic lake 90 million years ago

Source: The Conversation – Africa (2) – By Sandiso Mnguni, Honorary Research Associate, University of the Witwatersrand

The fossil thrips discovered in the Orapa Diamond Mine. Dr Sandiso Mnguni, CC BY-NC-ND

Thrips are tiny insects – their sizes range between 0.5mm and 15mm in length and many are shorter than 5mm. But the damage they cause to crops is anything but small. A 2021 research paper found that in Indonesia “the damage to red chilli plants caused by thrips infestation ranges now from 20% to 80%”. In India, various thrips infestations in the late 2010s and early 2020s “damaged 40%-85% of chilli pepper crops in Karnataka, Andhra Pradesh and Telangana”.

In Africa, a number of thrips species feed on sugarcane and have been known to damage nearly 30% of the crop in a single hectare of a farm. High rates of destruction have been recorded in Tanzania and Uganda on onion and tomato crops.

Now it’s emerged that thrips are hardly new to the African continent and the southern hemisphere more broadly. South Africa’s first and only Black palaeoentomologist, Sandiso Mnguni, who studies fossil insects, recently described a fossil thrips from Orapa Diamond Mine in Botswana that’s more than 90 million years old. He discussed his unique fossil find with The Conversation Africa.

What are thrips and how do they cause damage?

Thrips, also known as thunderflies, thunderbugs or thunderblights, are small, slender and fragile insects. They can be identified by their typically narrow, strap-like, fringed and feathery wings. Over time, they have also evolved distinctive asymmetrical rasping-sucking mouthparts consisting of a labrum, labium, maxillary stylets and left mandible. Most species use these to feed primarily on fungi. Some feed on plants and eat the tender parts of certain crops like sugarcane, tomatoes, pepper, onions, avocado, legumes and citrus fruits, focusing on the buds, flowers and young leaves.

This, along with their habit of accidentally distributing fungal spores while feeding or hunting, makes them destructive crop pests. They tend to feed as a group in large numbers, causing distinctive silver or bronze scarring on the surfaces of stems or leaves.

However, not all thrips are harmful. A small fraction of the 6,500 species that have already been described so far are pollinators of flowering plants; and a handful are predators or natural enemies of moths and other smaller animals such as mites.

A green leaf dotted with small black bugs in held in a person's hand
Larva, pupa and adult Weeping fig thrips (Gynaikothrips uzeli)
fcafotodigital

Tell us about the fossil thrips you’ve discovered

This is the first time that a fossil thrips has been recorded anywhere in Africa – or the entire southern hemisphere.

The Orapa Diamond Mine in Botswana is one of the most important fossil deposits on the continent. It’s about 90 million years old, dating back to the Cretaceous period.




Read more:
Fossil beetles found in a Botswana diamond mine help us to reconstruct the distant past


The deposit is situated 960 metres above sea level in the Kalahari Desert, about 250km due west of Francistown in Botswana, and 824km away from Johannesburg in South Africa. It was first discovered in 1967 and started producing carat diamonds in 1971.

Roughly 90 million years go, steam and gas caused a double eruption of diamondiferous kimberlites. These are vertical, deep-source volcanic pipes that form when magma rapidly rises from the Earth’s mantle, carrying diamonds and other minerals up to the surface. They create a distinctive rock formation that gets studied by geologists. This explosive volcanic eruption formed a deep crater lake at the centre of the mine.

Mining excavations during the 1980s and earlier uncovered and exposed fine-grained sedimentary rocks containing well preserved fossil plants and insects. These have already been studied by many researchers in the past. At the time, geology and palaeontology researchers from what was then the Bernard Price Institute, which has since been renamed the Evolutionary Studies Institute, at the University of the Witwatersrand in Johannesburg, were invited to collect the fossil material.

Although some of the material has been studied in the past, the fossil thrips hadn’t yet been put under the microscope. And that’s just what we did. By using its body characteristics and comparing it to living thrips, we can say for sure that it’s a thrips. But we didn’t give it a formal scientific name because it doesn’t have enough characteristics to classify it at the species level and describe it either as a new species or one that still exists today.

We think that the thrips either flew into the palaeolake that was formed by the volcanic eruption or was transported there through grass from a bird’s nest.

Why is this useful to know?

This discovery sheds light on the biodiversity and biogeography of thrips and many other groups of insects during a time when we know flowering plants that heavily relied on insect pollination were rapidly diversifying. This plant-insect reciprocal interaction goes back to the Devonian period, a time when there was a large super-continent called Gondwana. That’s when the first land plants evolved and dominated the Earth, and inadvertently led to many groups of insects, including thrips, diversifying to keep up with drastic changes in their preferred plant diets and habitats due to the dramatic environmental and climatic changes.




Read more:
Fossil insects help to reconstruct the past: how I ended up studying them (and you can too)


The fossil find also contributes to a more accurate documentation of life on Earth during the Cretaceous and helps scientists in reconstructing the past environment and climate in Botswana.

Hopefully there are more fossil insects waiting to be discovered in Botswana and elsewhere in Africa, to keep improving our picture of this long-ago world, and preserve the heritage of our continent.

The Conversation

Sandiso Mnguni receives funding from the GENUS: DSTI-NRF Centre of Excellence in Palaeosciences (Grant 86073). He is affiliated with the Agricultural Research Council Plant Health and Protection (ARC-PHP) and the Sophumelela Youth Development Programme (SYDP).

ref. The first fossil thrips in Africa: this tiny insect pest met its end in a volcanic lake 90 million years ago – https://theconversation.com/the-first-fossil-thrips-in-africa-this-tiny-insect-pest-met-its-end-in-a-volcanic-lake-90-million-years-ago-249077

Dinosaur tracks, made 140 million years ago, have been found for the first time in South Africa’s Western Cape

Source: The Conversation – Africa (2) – By Guy Plint, Professor Emeritus, Earth Sciences, Western University

Guy Plint examines one of the dinosaur tracks, which is above his head. Annemarie Plint, CC BY-NC-ND

Dinosaurs have captured people’s imagination ever since their bones and teeth were first scientifically described in 1822 by geologist and palaeontologist Gideon Mantell in England.

Dinosaur bones have taught us a great deal about these animals from the “age of dinosaurs”, the Mesozoic Era, which stretched from approximately 252 million years ago to 65 million years ago. However, there’s something especially appealing about a different kind of dinosaur fossil: their tracks, which show researchers what the animals were doing while they were alive.

Ichnology is the study of tracks and traces and, since 2008, the Cape South Coast Ichnology Project has documented more than 370 vertebrate tracksites on South Africa’s southern coast. These sites are from the Pleistocene Epoch, which stretched from approximately 2.6 million years ago to 11,700 years ago, much more recent than the Mesozoic.

We knew that this coastline contained Mesozoic sedimentary rocks, some of which include non-marine sediments that could potentially preserve dinosaur tracks. We are both familiar with dinosaur tracks from our research in Canada, so we decided to investigate the possibility of tracks in South Africa’s Western Cape.

We found some – and, once we knew what to look for, it was evident that the tracks were not rare. In a new paper published in the journal Ichnos, we describe our findings in detail, presenting evidence of tracks of sauropods (enormous plant-eating dinosaurs) and possibly ornithopods (another group of large herbivorous dinosaurs).

The tracks were found in a rugged, remote, breathtakingly spectacular coastal setting. They were made by dinosaurs in a variety of estuarine settings. Some were walking on sandy, inter-tidal channel bars. Others walked on the bottom of tidal channels, their feet sinking down into soft mud forming the bed of the channel. Other vague “squishy” structures were formed by dinosaurs wading, or even wallowing in the muddy fill of abandoned channels.

These tracks are around 140 million years old, from the very beginning of the Cretaceous period when the African and South American tectonic plates were starting to pull apart. Southern Africa has an extensive record of Mesozoic vertebrate fossils, but that record ends at around 180 million years ago in the Early Jurassic with the eruption of voluminous lava flows. To the best of our knowledge, all the southern African dinosaur tracks known until now are from the Triassic and Jurassic periods, so they pre-date these eruptions.

That means these tracks are not only the first from the Western Cape. They also appear to be the youngest – that is, the most recent – thus far reported from southern Africa.

Knowing where to look

After deciding to hunt for potential dinosaur tracks, we visited a few likely sites on the Cape south coast in 2022, choosing areas with non-marine deposits of the appropriate age, mostly in the eastern coastal portion of the Western Cape. We found a few promising spots on that visit and, in 2023, undertook a dedicated examination.

Large horizontal bedding surface exposures in this area are very rare. We knew that, if we were to find dinosaur tracks, they would be evident mostly in profile in vertical cliff exposures.




Read more:
Footprints take science a step closer to understanding southern Africa’s dinosaurs


In the public imagination a dinosaur trackway extends across a level surface and toe impressions are visible. Some may also know that the infill of dinosaur tracks can occur on what are today the ceilings of overhangs or cave roofs. However, there are also distinctive features that allow tracks to be identified in profile. That’s because the animals’ footfalls deformed underlying layers in a distinctive manner.

The problem is that other mechanisms, such as earthquakes, are capable of generating broadly similar deformation structures.

The deposits we were examining had probably also been affected by seismic activity. The challenge was for us to differentiate between the two types of deformation.

The Early Cretaceous rocks that we examined had been studied and reported on decades ago, and the deformation structures had been attributed to origins such as earthquakes rather than living organisms. Since then, however, scientists have developed a better appreciation of what dinosaur tracks look like in profile.

After careful examination, our conclusion was straightforward: both dinosaur-generated and earthquake-generated types of deformation were present in the Cretaceous rocks.

A small scale bar set beneath a dark, rocky protuberance
One of the sauropod tracks identified by the researchers. Scale bar is 20 cm.
Guy Plint, CC BY-NC-ND

Further evidence that we were looking at dinosaur tracks comes from the region’s bone fossil record. Cretaceous bone material has been reported from the region, mostly in the Kirkwood area in the Eastern Cape province. Two dinosaur bones have also been reported from the Knysna area in the Western Cape. One of these, a theropod tooth, was found – and correctly identified – by a 13-year-old boy.




Read more:
Dinosaur tracksite in Lesotho: how a wrong turn led to an exciting find


Clearly, dinosaurs were present in the Western Cape area. That means our discovery of ichnological evidence of their presence is not entirely surprising, but it is still extremely exciting.

Keep exploring

Our team plans to keep exploring deposits of suitable age in the region for evidence of more dinosaur tracks. We also hope that our discovery will inspire a new generation of dinosaur trackers to continue the quest and keep exploring.

The Conversation

The authors do not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

ref. Dinosaur tracks, made 140 million years ago, have been found for the first time in South Africa’s Western Cape – https://theconversation.com/dinosaur-tracks-made-140-million-years-ago-have-been-found-for-the-first-time-in-south-africas-western-cape-250660

Ancient DNA reveals Maghreb communities preserved their culture and genes, even in a time of human migration

Source: The Conversation – Africa (2) – By Giulio Lucarini, Senior Researcher, Institute of Heritage Science, National Research Council (CNR)

Doukanet el Khoutifa, Tunisia, where some of the remains were found. Giulio Lucarini, CC BY-NC-ND

The Neolithic period began in southwest Asia around 12,000 years ago. It marked a major shift in human history as societies transitioned from hunting and gathering to farming. This sparked migrations across Europe and dramatically reshaped the continent’s gene pool.

For a long time, North Africa was seen as a passive participant in this transformation. The dominant narrative suggested that farming economies never fully took root there.

Some studies proposed that North African communities actively resisted agriculture, except perhaps in the Nile Delta and the western Maghreb (modern-day Morocco). They continued to rely on land snails, wild plants, and hunting for survival. Only later, they also began herding domesticated sheep, goats, and cattle, introduced from southwest Asia.

Genetic studies have only recently tested this reconstruction in North Africa. This has never been done in the eastern Maghreb (modern-day Tunisia and eastern Algeria) – until now.

A clearly ancient human skeleton in a grave alongside a scale bar
A burial at one of the study sites, SHM-1 (Hergla) in Tunisia.
Simone Mulazzani, CC BY-NC-ND

As an Africanist archaeologist, I specialise in the study of ancient societies across Mediterranean Africa and the Sahara. My focus is on how humans adapted to their environments and the rise of food production in these regions. I recently conducted research in the eastern Maghreb alongside an international team of archaeologists, geneticists, and physical anthropologists to trace ancient population movements.

Our new study has just been published in Nature. We analysed the ancient genomes (complete DNA sequences) of nine individuals who lived in the eastern Maghreb between 15,000 and 6,000 years ago.

This may seem like a small sample. But, in the field of ancient DNA research, even a few well-preserved genomes can provide significant insights. They serve as reference points for tracing genetic lineages and identifying ancestral connections.

By adding genetic evidence to broader archaeological findings, we reconstructed patterns of population continuity, interaction and change over thousands of years.

Our results were striking. It’s clear from these genomes that some influence from farmers did reach north Africa from across the Mediterranean. But much of the genetic makeup of the eastern Maghreb populations remained rooted in their ancient foraging heritage.

This challenges the long-held narrative about migration into and out of north Africa before and during the Neolithic. It deepens our understanding of the past and highlights the incredible complexity of human movement and cultural exchange.

As we continue to unravel the genetic legacy of our ancestors, studies like this remind us of the complexity of human history. They show that the history of agriculture in the Mediterranean was not merely one of population replacement. Rather, it was a tale of cultural exchange, adaptation and continuity.

And researching these ancient human movements is more than just a matter of understanding history. It also provides insights into the patterns of migration and adaptation that can help us understand similar processes today.

Extraction and analysis

A map that shows the Mediterranean Sea, the Strait of Sicily and Pantelleria Island
A map of the eastern Maghreb showing the study sites (1: Afalou Bou Rhummel; 2: Djebba; 3: Doukanet el Khoutifa; 4: SHM-1, Hergla)
Giulio Lucarini, CC BY-NC-ND

We worked with ancient genomes extracted from human skeletal remains housed in museum or heritage institution collections. They came from excavations at four sites Afalou Bou Rhummel, Djebba, Doukanet el Khoutifa and SHM-1 (Hergla), all in the eastern Maghreb.

We chose the specimens because they were well-preserved, which is not always the case with ancient DNA.

The analysis found that some of the sampled individuals possessed European farmer ancestry around 7,000 years ago. Europeans contributed some genes to the region – but no more than 20% per individual.

A person working with small bones in a pit alongside some scientific equipment
Excavation of human remains at Doukanet el Khoutifa, Tunisia.
Giulio Lucarini, CC BY-NC-ND

This is a modest genetic influence compared to ancient western Maghreb populations where, at some sites, European farmer ancestry can reach as high as 80%.

Our findings suggest that food-producing economies were introduced to the eastern Maghreb not by a large-scale replacement of the population (as seen in Europe) but more gradually. Change happened through sporadic migrations, mixing of cultures, and the spread of knowledge.

Across sea and land

One of the most intriguing discoveries was the genetic trace of European hunter-gatherers found in one individual from Djebba, Tunisia, dating to around 8,000 years ago. This suggests that early European and north African populations could interact via seafaring routes across the Strait of Sicily.

Researchers have long known that cultural exchange took place across the Mediterranean. We see this from the spread of technologies such as the so-called pressure technique – a method of shaping stone tools by carefully applying force with a pointed implement rather than striking the stone directly.

The discovery in Tunisia of obsidian (volcano glass) from Pantelleria, a small island in the Strait of Sicily, strengthens the link between the Mediterranean’s northern and southern shores.

Prehistoric wooden artefacts are seldom preserved over time. This may explain the absence of boat remains from this period in North Africa. However, dugout canoes from similar periods found in central Italy (Bracciano Lake) suggest that seafaring skills were well established around the Mediterranean. While there is no direct evidence linking these specific canoes to connections between Europe and North Africa, they support the idea that navigation was within the technological capabilities of the time.

Our study is the first time the connections suggested by this existing evidence have been substantiated genetically.




Read more:
Discovery of 5,000-year-old farming society in Morocco fills a major gap in history – north-west Africa was a central player in trade and culture


Another exciting aspect of our study is the identification of early Levantine (modern southwest Asia)-related ancestry in the eastern Maghreb. This was detected in human remains dated to around 6,800 years ago. It’s a genetic signature that postdates the arrival of European farmer ancestry by several centuries. It likely reflects the movement of people associated with early pastoralism, who introduced domesticated animals, such as sheep and goats, to the region.

Backing up archaeological evidence

It is especially rewarding to see the genetic evidence aligning with the archaeological record. This underscores the value of multidisciplinary research in uncovering past human dynamics.

What emerges overall is a region of strong genetic and cultural resilience, consistent with archaeological evidence.

The Conversation

Giulio Lucarini receives funding for this study from the National Research Council of Italy (CNR) and ISMEO – International Association for Mediterranean and Oriental Studies, Italy. He is affiliated with the National Research Council of Italy, Institute of Heritage Science (CNR-ISPC).

This study resulted from a collaboration between the following institutions: Harvard University, USA; the Max Planck Institute, Germany; the National Research Council of Italy (CNR); the Institut National du Patrimoine (INP), Tunisia; the Centre National de Recherche Préhistorique, Anthropologique et Historique (CNRPAH), Algeria; the Institut de Paléontologie Humaine (IPH), France; the University of Vienna, Austria; Sapienza University of Rome, Italy; and ISMEO – International Association for Mediterranean and Oriental Studies, Italy.

ref. Ancient DNA reveals Maghreb communities preserved their culture and genes, even in a time of human migration – https://theconversation.com/ancient-dna-reveals-maghreb-communities-preserved-their-culture-and-genes-even-in-a-time-of-human-migration-248338

Black holes spew out powerful jets that span millions of light-years – we’re trying to understand their whole life cycle

Source: The Conversation – Africa (2) – By Gourab Giri, Postdoctoral researcher, University of Pretoria

An artistic representation of what a giant cosmic jet the size of the distance between the Milky Way and Andromeda could look like. Author provided, CC BY-SA

There is a supermassive black hole at the centre of nearly every big galaxy – including ours, the Milky Way (it’s called Sagittarius A*). Supermassive black holes are the densest objects in the universe, with masses reaching billions of times that of the Sun.

Sometimes a galaxy’s supermassive black hole “wakes up” due to a sudden influx of gas and dust, most likely supplied from a neighbouring galaxy. It begins eating up lots of nearby gas and dust. This isn’t a calm, slow or passive process. As the black hole pulls in material, the material gets superheated on a scale of millions of degrees, far hotter than the surface temperature of our Sun, and is ejected from the galaxy at near-light speeds. This creates powerful jets that look like fountains in the cosmos.

The accelerated high-speed plasma matter prompts these “fountains” to emit radio signals that can only be detected by very powerful radio telescopes. This gives them their name: radio galaxies. While black holes are common, radio galaxies are not. Only between 10% and 20% of all galaxies exhibit this phenomenon.

Giant radio galaxies are even less common. They account for only 5% of all radio galaxies and take their name from the fact that they reach enormous distances. Some radio galaxies’ jets reach nearly 16 million light-years. (That’s almost six times the distance between the Milky Way and the Andromeda galaxy.) The largest jet discovered spans nearly 22 million light-years across.




Read more:
South African telescope discovers a giant galaxy that’s 32 times bigger than Earth’s


But how do these structures cover such enormous distances? To find out, I led a study in which we used modern supercomputers to develop models that simulated behaviour of giant cosmic jets within a mock universe, constructed on the basis of fundamental physical laws governing the cosmos.

This allowed us to observe how radio jets propagate over hundreds of millions of years – a process impossible to track directly in the real universe. These sophisticated simulations provide deeper insights into the life cycle of radio galaxies, highlighting the differences between their early, compact stages and their later, expansive forms.

Understanding the evolution of radio galaxies helps us unravel the broader processes that shape the universe.

Supercomputing

Cutting-edge technology was key to this study.

Sensitive observations from world-class radio telescopes like South Africa’s MeerKAT and LOFAR in the Netherlands have recently led to several discoveries of cosmic fountains.




Read more:
MeerKAT: the South African radio telescope that’s transformed our understanding of the cosmos


However, modelling their origins has been challenging. Tracking events over millions of years is impossible in real-time.

That’s where supercomputers come in. These high-performance computing systems are designed to process massive amounts of data. They can perform complex simulations at incredible speeds. In this study, their power was crucial for modelling the evolution of giant radio jets over millions of years.

The necessary supercomputing power was provided by South Africa’s Inter-University Institute for Data Astronomy, a network comprising the University of Pretoria, the University of Cape Town and the University of the Western Cape.

Our universe is governed by fundamental forces like gravity, which can be described through mathematical formulas. These formulas, essentially numbers, are fed into supercomputers to create a simulated “mock universe” that follows the same physical laws as the real cosmos. This allows scientists to experiment with how jets from supermassive black holes evolve over time. With their immense processing power, supercomputers can simulate millions of years of cosmic jet evolution in just a month.

Key takeaways

Gravity is the dominant force in the universe, pulling heavier matter and dragging nearby lighter matter. If gravity were the only force at play, the universe might have collapsed by now. Yet we see galaxies, galaxy clusters and even life itself thriving. We suspect that these cosmic fountains play a key role in solving the mystery of how this happens.

By releasing thermal and mechanical energy, they heat up the surrounding collapsing gas, counteracting gravity and maintaining a balance that sustains cosmic structures.

Our models also shed light on why some radio galaxies’ jets bend sharply, forming an “X” shape in radio waves instead of following a straight trajectory, and revealed the conditions under which giant fountains can continue growing even in dense cosmic environments (that is, in a galaxy cluster).

The study also suggests that giant radio galaxies may be statistically more common than previously believed. There are potentially thousands of undiscovered giant cosmic fountains. Thanks to world-class telescopes like MeerKAT and LOFAR – and the power of supercomputers – there’s plenty more to explore as we try to understand our universe.

The research on which this article is based required extensive collaboration with an international team, including Jacinta Delhaize from the University of Cape Town, Joydeep Bagchi from Christ University, India, and DJ Saikia from the Inter-University Centre for Astronomy and Astrophysics in India. Essential contributions by Kshitij Thorat and Roger Deane from the University of Pretoria also played a crucial role in shaping the study.

The Conversation

Gourab Giri does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Black holes spew out powerful jets that span millions of light-years – we’re trying to understand their whole life cycle – https://theconversation.com/black-holes-spew-out-powerful-jets-that-span-millions-of-light-years-were-trying-to-understand-their-whole-life-cycle-250073

Los animales que usan plantas para curarse nos inspiran para descubrir nuevos fármacos

Source: The Conversation – (in Spanish) – By Eva María Domínguez Martín, Profesora Ayudante Doctora en la Facultad de Farmacia, Universidad de Alcalá

Los chimpancés ingieren ciertas plantas para combatir infecciones o problemas intestinales. Oliver Gorgis/Shutterstock

Los productos naturales, principalmente las especies vegetales, han jugado un papel clave en la medicina tradicional de diversas regiones a nivel global. Por ejemplo, ya en torno al año 65, el médico, botánico y farmacólogo griego Dioscórides describió en su obra De Materia Medica unas 600 plantas medicinales. Muchas de ellas se continúan empleando hoy en día.

Desde principios del siglo XIX comenzaron a aislarse e identificarse numerosos compuestos químicos con una gran diversidad y complejidad estructural. Estos procedían, precisamente, de esas plantas conocidas desde la Antigüedad. Más tarde, a partir de finales del siglo XX, surgió el interés por otras fuentes, como los productos de origen marino.

En la actualidad, uno de los principales y mayores desafíos sanitarios a los que nos enfrentamos es la resistencia a múltiples fármacos, no solo a antiinfecciosos como los antibióticos, sino también antitumorales. Este problema afecta tanto a los seres humanos como a los animales y las plantas.

Por tanto, es necesario invertir en el desarrollo de nuevos tratamientos que hagan frente a las patologías en las que aparecen resistencias y a otras enfermedades para las que actualmente no existe cura.

Esta situación ha dado lugar a que se hayan vuelto a revisitar fuentes tradicionales de descubrimiento de fármacos, como son las plantas, bajo un nuevo enfoque. Y aquí el estudio de la conducta animal puede jugar un papel importante.

Los animales también se automedican

La llamada “zoofarmacognosia” es la ciencia que investiga el uso de diversas sustancias por parte de los animales con fines tanto preventivos como curativos. Es considerada una disciplina científica desde 1987, aunque existen datos sobre este tipo de estudios también desde la Antigua Grecia.

Entre las sustancias utilizadas por los animales con esos fines, las más empleadas –y de las que más información existe– son las plantas.

En los últimos 10 años, la zoofarmacognosia ha suscitado un renovado interés. Por ejemplo, han comenzado a publicarse diversos trabajos que conectan este tipo de conductas animales con la fitoquímica, la ciencia que estudia los compuestos químicos de las plantas.

En el mundo vegetal, las principales líneas de defensa pueden ser físicas (por ejemplo, espinas) y químicas. Dentro de estas últimas, las plantas son capaces de producir una amplia variedad de metabolitos secundarios para cumplir distintas funciones no esenciales: defensivas (frente a depredadores), adaptativas y comunicativas con su entorno. Ejemplo de ello son compuestos como los terpenos, las saponinas y los taninos.

El caso de los chimpancés

Diversos estudios han revelado ejemplos de automedicación en distintas especies de mamíferos rumiantes, simios y elefantes, entre otros.

Las investigaciones más relevantes y numerosas hasta la fecha son las que han constatado este tipo de conductas en los primates. Uno de los casos más conocidos es el de los chimpancés, que mastican hojas de la planta Vernonia amygdalina (vernonia amarga, por su nombre vulgar) cuando sufren distintos tipos de infecciones.

También se ha observado que estos simios ingieren hojas y cortezas de raíces de Albizia grandibracteata y de hojas de Rubia cordifolia cuando presentan problemas intestinales relacionados con parásitos.

Pero ¿por qué usan esas plantas? ¿Funcionan? ¿Cómo lo hacen? La fitoquímica intenta racionalizar y dar explicación a estas cuestiones. Su método de trabajo se basa en extraer, fraccionar, aislar y caracterizar los metabolitos secundarios presentes en los extractos de las especies consumidas por estos animales. Tras realizar ensayos de bioactividad con los extractos, fracciones y compuestos aislados, se consigue relacionar los comportamientos observados en animales (de prevención y tratamiento) con las actividades que han sido probadas en los ensayos.

Así, se ha podido constatar que la especie V. amygdalina es rica en lactonas sesquiterpénicas, que tienen propiedades antibióticas y antitumorales; que A. grandibracteata contiene saponinas, efectivas contra parásitos gusanos (helmintos); y que R. cordifolia es abundante en diversos compuestos, como terpenos y naftoquinonas, que han mostrado actividad antiparasitaria, antiinflamatoria y antitumoral.

Otros trabajos han recogido el aumento del consumo de plantas ricas en taninos en corderos parasitados. Adicionalmente, estos comportamientos de automedicación no solo se ha detectado en especies vertebradas, sino también en insectos.

Una ventana al desarrollo de nuevos fármacos

Otro aspecto relevante es que los animales emplean las mismas especies y géneros de plantas que las comunidades humanas rurales presentes en su área geográfica, como reflejan las farmacopeas tradicionales.

Si a este dato añadimos los ejemplos de zoofarmacognosia recopilados, cuyos usos han comenzado a racionalizarse científicamente mediante la fitoquímica, cabe afirmar que nos hallamos ante una línea de investigación prometedora para desarrollar nuevos fármacos. Además, muchos de estos ejemplos se han obtenido de grandes simios, filogenéticamente muy relacionados con el ser humano.

Por todo ello, es necesario realizar un esfuerzo multidisciplinar para identificar plantas empleadas por los animales que tengan propiedades bioactivas, sin olvidar la búsqueda de otras especies vegetales dentro del mismo género eficaces frente a infecciones y cánceres resistentes. El mundo vegetal es una farmacia al alcance del ser humano, y otros animales pueden ayudarnos a explorarla.

The Conversation

Eva María Domínguez Martín no recibe salario, ni ejerce labores de consultoría, ni posee acciones, ni recibe financiación de ninguna compañía u organización que pueda obtener beneficio de este artículo, y ha declarado carecer de vínculos relevantes más allá del cargo académico citado.

ref. Los animales que usan plantas para curarse nos inspiran para descubrir nuevos fármacos – https://theconversation.com/los-animales-que-usan-plantas-para-curarse-nos-inspiran-para-descubrir-nuevos-farmacos-253143

La ciencia de las algas entra en MasterChef

Source: The Conversation – (in Spanish) – By Rocío Ibarra Arias, Responsable de Comunicación IEDIS y Colaboradora GICID, Universidad de Zaragoza

Plato preparado con algas wakame. vsl/Shutterstock

¿Qué tienen en común un plato de alta cocina, un superalimento y el cuidado medioambiente? Los jueces de MasterChef España lo tienen claro. “Las algas suponen un antes y un después en la cocina”, afirmaba Samantha Vallejo-Nágera. “Aportan lo mejor de las hortalizas y del mar”, añadía Jordi Cruz. Y para Pepe Rodríguez, son “un ingrediente sostenible que enriquece caldos, sopas y hasta platos tradicionales”.

Cuando ciencia y televisión cocinan juntas

El caso de las algas marinas es un buen ejemplo de cómo el conocimiento científico y la cultura mediática pueden colaborar para transformar percepciones y hábitos de consumo. Gracias a su presencia en programas de gran audiencia y al respaldo de la investigación, las algas han pasado de lo exótico a lo cotidiano, de lo anecdótico a lo estratégico.

En MasterChef, las algas han dejado de ser una rareza para convertirse en protagonistas. Y su impacto va mucho más allá de la televisión: están transformando la forma en que comemos, cocinamos y pensamos el futuro de la alimentación. La sinergia entre gastronomía y ciencia sitúa a las algas como motor de innovación culinaria, nutricional y medioambiental.

Las algas como protagonistas en MasterChef

Desde sus primeras temporadas, MasterChef ha incorporado las algas de manera habitual tanto en pruebas de plató como en exteriores. Codium, kombu, espagueti de mar, wakame o lechuga de mar forman parte del “supermercado” al que acceden los concursantes en un 40 %-60 % de los cocinados.

Además, chefs invitados presentan platos emblemáticos con algas como ingrediente central, como el coral de amaranto con emulsión de codium o la sopa de escabeche de mar con agua de algas del chef Ángel León.

Los finalistas del programa también han apostado por ellas en los menús decisivos, como en la final de Ángela, con su plato “Perfumadita de Brea”, o en elaboraciones como el solomillo con pesto de algas de Nacho Manzano.

plato de carne con ensalada y verduras
Receta de MasterChef de solomillo de vaca rubia, con pesto de algas y ensalada.
RTVE, CC BY

Más allá del atractivo gastronómico, MasterChef también ha aprovechado su alcance para concienciar sobre la sostenibilidad. En una reciente prueba, los aspirantes cocinaron con especies invasoras como el wakame o el kombu, originarias de Asia y el Pacífico. Estas algas, al no tener depredadores naturales, se reproducen rápidamente y alteran los ecosistemas. El programa destacó su consumo controlado como estrategia para mitigar su impacto ambiental, siguiendo las recomendaciones internacionales sobre biodiversidad.

Un superalimento con respaldo científico

Desde la ciencia, las algas también han captado la atención por su extraordinario perfil nutricional. Ricas en minerales como yodo, calcio, hierro y magnesio, también destacan por su contenido en vitaminas A, C, D, E, K y B12.

Este último nutriente, escaso en dietas vegetales, hace de las algas un recurso clave para la nutrición global. En palabras de Jordi Cruz, se aúna en un solo producto lo mejor de las hortalizas y del mar, lo que refuerza su potencial como superalimento integral.

Su fácil cultivo y alto rendimiento las posicionan como una solución realista para combatir deficiencias nutricionales en regiones con acceso limitado a otros alimentos ricos en micronutrientes.

Industria alimentaria: mucho más que ensaladas

La aplicación de algas va mucho más allá del plato. Compuestos como el alginato o el agar se emplean como gelificantes y estabilizantes en productos procesados. Estudios recientes han demostrado que pueden enriquecer alimentos con ácidos grasos poliinsaturados y proteínas de alta calidad, impulsando una alimentación vegetal más saludable y tecnológicamente avanzada. Pepe Rodríguez subraya que “las algas funcionan de maravilla para enriquecer caldos y sopas”, lo que demuestra su valor funcional en la cocina profesional y en la industria.

Economía azul y empoderamiento social

El mercado global de algas ha crecido exponencialmente, pasando de 5 000 a 17 000 millones de dólares en apenas dos décadas. Este auge no solo beneficia a la industria, sino también a comunidades costeras en países en desarrollo. En zonas de Asia y África, más del 50 % de las personas que trabajan en su cultivo son mujeres, muchas de ellas liderando proyectos que mejoran su autonomía económica y social.

Lo único que nos falta es encontrar ese supermercado donde las algas estén fácilmente disponibles, lo que fomentaría que más personas las compren y experimenten con ellas.

Hacia una sostenibilidad activa

El impacto ambiental positivo de las algas es doble. Por un lado, su cultivo captura CO₂ de forma eficiente, ayudando a mitigar el cambio climático. Por otro, se exploran sus aplicaciones en la fabricación de bioplásticos y biocombustibles, con tasas de crecimiento prometedoras en el mercado. Las algas son un recurso sostenible y si cuidamos nuestros mares, siempre estarán disponibles como alimento y no solo como recurso marino.

Además, su uso responsable como ingrediente culinario, como ejemplificó MasterChef en la prueba sobre especies invasoras, puede convertirse en una estrategia ecológica que combine alimentación sostenible y protección de la biodiversidad marina.

Hoy, comer algas no solo es tendencia: es una apuesta por la salud, la sostenibilidad y la innovación alimentaria. Como dirían los jueces de MasterChef: ¡pongámosle sabor a la vida!

The Conversation

Las personas firmantes no son asalariadas, ni consultoras, ni poseen acciones, ni reciben financiación de ninguna compañía u organización que pueda obtener beneficio de este artículo, y han declarado carecer de vínculos relevantes más allá del cargo académico citado anteriormente.

ref. La ciencia de las algas entra en MasterChef – https://theconversation.com/la-ciencia-de-las-algas-entra-en-masterchef-259472

Iran and Ethiopia have a security deal – here’s why they signed it

Source: The Conversation – Africa (2) – By Eric Lob, Associate Professor of Politics and International Relations, Florida International University

Ethiopia and Iran signed a memorandum of understanding (MOU) on 6 May 2025. Under it, their national police agencies will cooperate on security and intelligence. This will include combating cross-border crime, sharing intelligence and building capacity. They will also share experiences and training.

For Iran, the MOU marks a significant step towards strengthening relations with a regional power that’s strategically located in the Horn of Africa.

Tehran has been using its security apparatus and military capabilities to establish and expand political and economic ties with countries in Africa. This has included drone transfers to the Ethiopian government that helped it turned the tide of the Tigray war, a separatist struggle in the country’s north that took place from 2020 to 2022.

Iran has also supplied the Sudanese army with surveillance and combat drones. These have been used against the paramilitary Rapid Support Forces in Sudan’s ongoing civil war.

The agreement is important for Ethiopia for two reasons.

Firstly, it’s likely to enable the Ethiopian government in Addis Ababa to combat ethnic militias more effectively. It faces increasing internal instability, including tensions with hostile factions of the separatist Tigray People’s Liberation Front.

Secondly, the agreement comes after a meeting in Addis Ababa between the Ethiopian police chief, Demelash Gebremichael, and a delegation from Iran’s regional rival, the United Arab Emirates (UAE). The exchange concentrated on investigating and extraditing cross-border criminals.

Addis Ababa’s willingness to work with regional rivals in the Middle East shows its pragmatic approach to foreign relations. Ethiopia needs all the friends it can muster as an embattled and weakened state. Since the Tigray war, it has battled the rise of ethnic militias and confronted economic adversity. It is also facing renewed hostility with neighbouring Eritrea.

What Iran stands to gain

Since 2016, Ethiopia has been a gateway for Iran to gain a foothold in the Horn of Africa. That year, other countries in the region severed relations with Iran. This followed Tehran’s disengagement from sub-Saharan Africa under Hassan Rouhani, who served as president from 2013 to 2021, and his prioritisation of a nuclear deal with the US.

The severing of ties was also a byproduct of geopolitical pressure exerted by Saudi Arabia and the UAE on countries in the region. The Middle Eastern states wanted to reduce, if not eliminate, Iran’s presence in the Horn of Africa and Red Sea to limit its support for Houthi rebels in the ongoing Yemeni civil war.




Read more:
Iran’s intervention in Sudan’s civil war advances its geopolitical goals − but not without risks


Ethiopia was the first country in sub-Saharan Africa to establish relations with Iran during the 1960s. It was also one of its top trading partners on the continent before and after the 1979 Iranian Revolution.

Strategically and ideologically, this special relationship was based on the pro-western and anti-communist stances of their monarchs: the Shah of Iran Mohammad Reza Pahlavi, who ruled from 1941 to 1979, and Emperor Haile Selassie, who was in power from 1930 to 1974.

After the revolution, Iran-Ethiopia relations revived under Mahmoud Ahmadinejad, who served as Iranian president from 2005 to 2013. He pursued an active Africa policy to mitigate Iran’s international isolation and circumvent US sanctions.

After Rouhani initially downgraded these relations, they were renewed during his second term. This followed US withdrawal from the nuclear deal.

Relations firmed when Ebrahim Raisi, who served as Iranian president from 2021 to 2024, delivered military drones and other aid to Addis Ababa during the Tigray war.

What’s in it for Ethiopia

Ethiopia is facing increasing instability and uncertainty. The Tigray war has depleted the state’s resources. There is an economic crisis caused by rising inflation and unemployment.

Addis Ababa continues to confront ethnic tensions. Hostile factions of the Tigray People’s Liberation Front remain. It also faces tensions with the Amhara Fano militia, which initially fought alongside the government against Tigrayan forces. Forced disarmament policies and ongoing land disputes caused the militia to take up arms against the government.




Read more:
Somaliland-Ethiopia port deal: international opposition flags complex Red Sea politics


Ethiopian prime minister Abiy Ahmed also faces growing opposition and resistance from his own ethnic group, the majority Oromo, and their Oromo Liberation Army. The reason for their discontent is Abiy’s imposition of centralised rule on their regional state within a federal system.

The security and intelligence cooperation with Iran could allow Addis Ababa to combat ethnic militias more effectively.

It would also enable Ethiopia to prepare for another possible war against neighbouring Eritrea.

Ethiopia and Eritrea normalised relations and fought together against Tigrayan forces. However, tensions between the two countries have been brewing again. These have been triggered by two factors. First, the conditions of the 2022 Pretoria peace agreement caused Eritrea to maintain forces inside Ethiopia. Second are the ambitions of Addis Ababa to acquire a Red Sea port in Somaliland, a breakaway region of Somalia. Eritrea has supported Somalia’s opposition to the deal.

Regional power games

This isn’t the first time that Ethiopia has tried working with two regional rivals – Iran and the UAE. The UAE is also among its top trading partners, along with Saudi Arabia.

In 2016, Ethiopia was the only country in the Horn of Africa that didn’t cut ties with Iran, though it was under pressure from the UAE and Saudi Arabia to do so. The decision was taken by Abiy’s predecessor, Hailemariam Desalegn, whose term ran from 2012 to 2018.

During the Tigray war, Ethiopia received military drones and other assistance from Iran and the UAE, alongside Turkey.

The civil war in Sudan has presented an even more complicated story. Ethiopia has vacillated between engaging with the Rapid Support Forces and the Sudanese Armed Forces at different points in the conflict.

For its part, Iran has supported the Sudanese army. The UAE has backed the paramilitary Rapid Support Forces.

Ethiopia’s efforts to strengthen its security ties with Iran and the UAE show a unique case of convergence between regional rivals that have otherwise remained on opposite sides of conflicts in countries like Yemen and Sudan.

The Conversation

Eric Lob does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Iran and Ethiopia have a security deal – here’s why they signed it – https://theconversation.com/iran-and-ethiopia-have-a-security-deal-heres-why-they-signed-it-256486

Trump’s worldview is causing a global shift of alliances – what does this mean for nations in the middle?

Source: The Conversation – Global Perspectives – By Dilnoza Ubaydullaeva, Lecturer in Government – National Security College, Australian National University

Since US President Donald Trump took office this year, one theme has come up time and again: his rule is a threat to the US-led international order.

As the US political scientist John Mearsheimer famously argued, the liberal international order

was destined to fail from the start, as it contained the seeds of its own destruction.

This perspective has gained traction in recent years. And now, Trump’s actions have caused many to question whether a new world order is emerging.

Trump has expressed a desire for a new international order defined by multiple spheres of influence — one in which powers like the US, China and Russia each exert dominance over distinct regions.

This vision aligns with the idea of a “multipolar” world, where no single state holds overarching global dominance. Instead, influence is distributed among several great powers, each maintaining its own regional sphere.

This architecture contrasts sharply with earlier periods – the bipolar world of the Cold War, dominated by the US and the Soviet Union; and the unipolar period that followed, dominated by the US.

What does this mean for the world order moving forward?

Shifting US spheres of influence

We’ve seen this shift taking place in recent months. For example, Trump has backed away from his pledge to end the war between Russia and Ukraine and now appears to be leaving it to the main protagonists, and Europe, to find a solution.

Europe, which once largely spoke in a unified voice with the US, is also showing signs of policy-making which is more independent. Rather than framing its actions as protecting “Western democratic principles”, Europe is increasingly focused on defining its own security interests.

In the Middle East, the US will likely maintain its sphere of influence. It will continue its unequivocal support for Israel under Trump.

Donald Trump fist pumping next to Benjamin Netanyahu outside the White House.
Amid shifting global alliances, the Trump administration will continue to support Israel, led by Prime Minister Benjamin Netanyahu.
noamgalai/Shutterstock

The US will also involve itself in the region’s politics when its interests are at stake, as we witnessed in its recent strikes on Iranian nuclear facilities.

This, along with increasing economic ties between the US and Gulf states, suggests US allies in the region will remain the dominant voices shaping regional dynamics, particularly now with Iran weakened.

Yet it’s clear Trump is reshaping US dynamics in the region by signaling a desire for reduced military and political involvement, and criticising the nation building efforts of previous administrations.

The Trump administration now appears to want to maintain its sphere of influence primarily through strong economic ties.

Russia and China poles emerging elsewhere

Meanwhile, other poles are emerging in the Global South. Russia and China have deepened their cooperation, positioning themselves as defenders against what they frame as Western hegemonic bullying.

Trump’s trade policies and sanctions against many nations in the Global South have fuelled narratives (spread by China and Russia) that the US does not consistently adhere to the rules it imposes on others.

Trump’s decision to slash funding to USAID has also opened the door to China, in particular, to become the main development partner for nations in Africa and other parts of the world.

And on the security front, Russia has become more involved in many African and Middle Eastern countries, which have become less trustful and reliant on Western powers.

Vladimir Putin and Xi Jinping shaking hands.
Russian President Vladimir Putin and Chinese leader Xi Xinping see opportunities to spread their influence in the Global South.
plavi011/Shutterstock

In the Indo-Pacific, much attention has been given to the rise of China and its increasingly assertive posture. Many of Washington’s traditional allies are nervous about its continued engagement in the region and ability to counter China’s rise.

Chinese leader Xi Jinping has sought to take advantage of the current environment, embarking on a Vietnam, Malaysia and Cambodia push earlier this year. But many nations continue to be wary of China’s increasing influence, in particular the Philippines, which has clashed with China over the South China Sea.

Strategic hedging

Not all countries, however, are aligning themselves neatly with one pole or another.

For small states caught between great powers, navigating this multipolar environment is both a risk and an opportunity.

Ukraine is a case in point. As a sovereign state, Ukraine should have the freedom to decide its own alignments. Yet, it finds itself ensnared in great power politics, with devastating consequences.

Other small states are playing a different game — pivoting from one power to another based on their immediate interests.

Slovakia, for instance, is both a NATO and EU member, yet its leader, Robert Fico, attended Russia’s Victory Day Parade in May and told President Vladimir Putin he wanted to maintain “normal relations” with Russia.

Then there is Central Asia, which is the centre of a renewed “great game,” with Russia, China and Europe vying for influence and economic partnerships.

Yet if any Central Asian countries were to be invaded by Putin, would other powers intervene? It’s a difficult question to answer. Major powers are reluctant to engage in direct conflict unless their core interests or borders are directly threatened.

As a result, Central Asian states are hedging their bets, seeking to maintain relations with multiple poles, despite their conflicting agendas.

A future defined by regional power blocs?

While it is still early to draw definitive conclusions, the events of the past few months underscore a growing trend. Smaller countries are expressing solidarity with one power, but pragmatic cooperation with another, when it suits their national interests.

For this reason, regional power blocs seem to be of increasing interest to countries in the Global South.

For instance, the China-led Shanghai Cooperation Organisation has become a stronger and larger grouping of nations across Eurasia in recent years.

Trump’s focus on making “America Great Again,” has taken the load off the US carrying liberal order leadership. A multipolar world may not be the end of the liberal international order, but it may be a reshaped version of liberal governance.

How “liberal” it can be will likely depend on what each regional power, or pole, will make of it.

The Conversation

Dilnoza Ubaydullaeva does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Trump’s worldview is causing a global shift of alliances – what does this mean for nations in the middle? – https://theconversation.com/trumps-worldview-is-causing-a-global-shift-of-alliances-what-does-this-mean-for-nations-in-the-middle-257113

Is Kenya’s president safe in a crowd? Security expert scans VIP protection checklist

Source: The Conversation – Africa (2) – By Douglas Lucas Kivoi, Principal Policy Analyst, Governance Department, The Kenya Institute for Public Policy Research and Analysis (KIPPRA)

Protecting any president requires multiple layers of intelligence, physical security and rapid response security protocols. Exact operational details are classified, but there are global best practices in VIP protection.

The issue of presidential protection in Kenya has become particularly relevant following an incident in early May 2025 when someone in a crowd threw a shoe at President William Ruto during a public event, hitting his hand.

I have studied policing and security policies in Kenya for over 15 years, interacting closely with the country’s security protocols. In my view this incident exposed several critical security lapses around the elite officers tasked with protecting the president.

The security of the president is a critical issue in Kenya. The country is exposed to terror groups like the Somalia-based Al-Shabaab and other criminal networks in the region.

In 2021, a businessman embedded himself into the presidential motorcade and drove into then president Uhuru Kenyatta’s official residence. In 2017, an unidentified man who was said to have illegally accessed the highly protected state house grounds was shot dead by presidential guards.

There are multiple layers to Kenya’s protection protocols. They include National Intelligence Service officers, the Kenya Defence Force, Presidential Escort Police officers drawn from the highly trained General Service Unit, bomb disposal experts and regular police officers. Their deployment depends on the nature of the presidential engagement.

While the shoe incident may be passed off as simply embarrassing, it should serve as a wake-up call to tighten security protocols around the president without necessarily compromising his public engagement with citizens.

What’s in place

Prior to any presidential visit across the country, security teams conduct a thorough reconnaissance of the destination. This includes coordinating with local policing agencies, clearing airspace, mapping secure transport routes and identifying nearby medical facilities in case of emergencies.

Presidential motorcade routes are pre-planned and a dry run is made. This often includes mapping alternative routes to avoid predictability should there be assailants along a presidential route. It is common to see some roads temporarily closed and security officers conducting sweeps for any threats or explosives. In areas deemed high risk, counter security sniper teams are covertly deployed in strategic areas.

Cases of attacks on presidential motorcades are rare in Kenya. However, in 2002 during presidential campaigns, angry opposition supporters stoned then president Daniel Moi’s motorcade. In November 2021, an angry mob hurled rocks at then deputy president Ruto’s motorcade.

The National Intelligence Service and Presidential Escort Unit covertly scout locations in advance, assessing potential security vulnerabilities. Crowd sizes, and entry and exit points for the head of state are mapped out in advance.

In cases where meetings are held in town halls or huge tents, attendees are screened using metal detectors and/or physical searches. Uniformed and plainclothes security officers embed themselves in the crowd to monitor any threats.

The president and any dignitaries accompanying him have at least three layers of security.

The inner ring consists of close protection officers who are always within an arm’s length of the president to physically thwart any threats. The middle ring has armed security guards who watch for, among others, sudden movements and abnormal behaviour within the crowd. The outer ring consists of regular police and paramilitary units from the General Service Unit who secure the outside perimeter.

The presidential motorcade is a coordinated convoy of heavily armoured vehicles. It includes lead and chase cars, communication units and emergency response teams. Traffic is managed by local traffic police officers to ensure unobstructed movement. Routes are kept confidential until necessary.

The president’s security may opt to use a decoy vehicle if there is a security threat, to confuse and derail potential risk sources. In all these cases, there is a contingent of specialised General Service Unit officers, called the Recce unit, that always accompanies the president.

Kenya’s presidential security precautions follow standard VIP security protection like those for heads of state across the world. However, in some neighbouring countries, for instance, presidents move in heavily armed military convoys. This has not been seen in Kenya.

If a potential threat is detected, the president is immediately shielded and whisked away to a secure vehicle or evacuated by air in high-risk events. In such cases, the Kenya Defence Forces secures the president.

Despite stringent security measures, incidents can occur. For instance, in March 2025, a British tourist was fatally hit by a vehicle in Ruto’s motorcade. This prompted investigations and reviews on motorcade safety protocols.

Such events highlight the challenges of balancing presidential security with public safety, especially in densely populated urban areas.

Security failures

The shoe-throwing incident targeting Ruto highlighted five major failures in presidential protection protocols.

First, crowd screening and access control failures. The alleged assailant was very close to the president, suggesting an inadequate distance between the crowds and the president. The inner ring of security also failed to spot the perpetrator raising a shoe in the air to use as a projectile. This indicates weak front-row eye sweeps and scans by the president’s security.

Second, there was an apparent delay in security response. The elite officers around the president should have subdued the alleged attacker within seconds. It could mean most had their eyes on the president or cameras, as opposed to scanning the crowds for any sudden movements.

Third, security allowed the president to stand too close to a crowd that hadn’t been screened. Best practices require a no-go zone of three to five metres for individuals who have not been scanned or screened.

Fourth, there was an apparent gap in intelligence and threat assessment. Aggressive or agitated people next to the president should draw the attention of security officers. Plainclothes security officers are usually deployed to monitor crowd behaviour. It isn’t enough to rely on uniformed officers.

Undercover agents are critical for flagging pre-attack signals, such as nervousness or repeated adjustments of positions.

Fifth, there was no clear evacuation plan for the president. After the incident, the president continued speaking. In high-risk scenarios, protocols often demand instant relocation of the president to a secure vehicle or helicopter, where the military takes over and airlifts him to safety.

What should change

Kenya’s presidential security detail may be forced to:

  • increase standoff distance between the president and crowds

  • deploy more plainclothes officers to blend in and monitor crowds around the president

  • mandate stricter screening of those in close proximity to the president

  • conduct more frequent security risks drills for rapid neutralisation of potential threats.

The exact details of presidential security in Kenya are confidential. However, the overarching structure aims to provide comprehensive protection to the president while maintaining public safety and order during official engagements. No security protocol is 100% foolproof. But a balance needs to be struck between overly aggressive crowd control and accessibility.

The Conversation

Douglas Lucas Kivoi does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Is Kenya’s president safe in a crowd? Security expert scans VIP protection checklist – https://theconversation.com/is-kenyas-president-safe-in-a-crowd-security-expert-scans-vip-protection-checklist-256268