Origins of Israel’s nuclear ambiguity lie in a secret deal forged between Richard Nixon and Golda Meir – podcast

Source: The Conversation – UK – By Gemma Ware, Host, The Conversation Weekly Podcast, The Conversation

Israel has never officially confirmed or denied having nuclear weapons and has never signed the nuclear non-proliferation treaty. Instead, even as evidence has emerged about its nuclear capabilities, Israel has maintained a policy of nuclear ambiguity.

The origins of this opacity lie in a secret deal forged in a one-on-one meeting between Israeli prime minister, Golda Meir, and the US president, Richard Nixon, at the White House in September 1969.

In this episode of The Conversation Weekly podcast, we speak to Avner Cohen, professor of non-proliferation studies at the Middlebury Institute of International Studies at Monterrey in the US, about that 1969 deal and why it has endured for more than 50 years. Cohen is the author of Israel and the Bomb, considered the definitive work on Israel’s nuclear programme, and has been interrogated by the Israeli state for his research.

Cohen tells us that the understanding between Meir and Nixon meant the US accepted Israel as a special kind of nuclear weapon state. In turn, Israel committed to restraint, not to test nuclear weapons, and not to be the first to introduce them to the region. Neither side has confirmed the existence of a deal, and there are only hints at it in the historical record. Cohen explains:

 Once you realise that there is actually a deal, it explains a great deal of the situation. Why the US [is] looking the other way, why the issue is determined to be removed from the diplomatic agenda, and why many other countries, especially in the west, prefer not to see the Israeli nuclear issue.

Listen to the conversation with Avner Cohen on The Conversation Weekly podcast.


This episode of The Conversation Weekly was written and produced by Mend Mariwany and Gemma Ware with assistance from Katie Flood and Ashlynne McGhee. Mixing and sound design by Eloise Stevens and theme music by Neeta Sarl.

Newclips in this episode from CNN, AP Archive, BBC News and ABC.

Listen to The Conversation Weekly via any of the apps listed above, download it directly via our RSS feed or find out how else to listen here. A transcript of this episode is available on Apple Podcasts or Spotify.

The Conversation

Avner Cohen 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. Origins of Israel’s nuclear ambiguity lie in a secret deal forged between Richard Nixon and Golda Meir – podcast – https://theconversation.com/origins-of-israels-nuclear-ambiguity-lie-in-a-secret-deal-forged-between-richard-nixon-and-golda-meir-podcast-261789

Plug-in solar panels are the latest green energy trend – here’s what you need to know

Source: The Conversation – UK – By Dylan Ryan, Lecturer in Mechanical & Energy Engineering, Edinburgh Napier University

Astrid Gast/Shutterstock

Solar power is the fastest growing source of electricity globally. Normally, anyone wanting to tap into it would have to rely on roof-mounted panels. But in many parts of Europe, people have found a simple alternative in the form of “plug-in panels” that can be arranged on balconies.

Instead of having to be wired into the house, you can feed the power generated by these panels into an inverter and a standard plug. Is this something that might catch on in the UK? Let’s investigate.

First, solar installations usually come under “permitted development” with regard to planning permission. But you still might need to apply, particularly if you live in a shared development or a listed building.

For example, some apartment blocks are insured collectively; if solar panels are going to affect the building’s insurance, it’s going to affect the whole block. There may also be rules regarding what you can put on your balcony, so consult your building manager.

The UK government is promising to ease restrictions on solar balconies, but we shall have to see how it addresses these issues.

There are also safety concerns. The power generated by the panel has to be balanced with consumption. Which, in practice, may restrict their use to a circuit that only connects to low-power devices (lights, TVs or computers are fine, but not ovens or kettles).

So you need to be aware of what the panels are connected to, particularly if you have an older home which may have been built before modern electrical safety standards. Also, to connect the panels, you would need a weatherised external plug, which not all flats have.

How much power could you get?

As luck would have it, I have a south-facing balcony, so let us run the numbers.

I came across a 800W system online that sells for £499 (with supports that would allow me to mount it). It has an area of 3.95m² and is made of a thin photovoltaic film (about 10-12% efficient).

The optimum angle for a solar panel in Edinburgh where I live is 37.6 degrees. Mounting them vertically (draped over the railing of a balcony, as is often the case) will reduce performance, with typical losses of 30-45%. My balcony is also completely shaded for half of the day due to a neighbouring building, so a panel will generate little power at those times.

A house with a large balcony covered with a vertical line of panels.
A vertically mounted solar system in France. This is not the best angle for generation.
Asurnipal/Wikimedia, CC BY

The position of the sun varies as it moves across the sky during the day, as well as seasonally, as does the solar energy received. We can input this data plus our location into an online calculator, which will account for hourly and seasonal variations.

This estimates output for a vertically mounted panel at 132 kilowatt-hours per year (kWh/yr). Assuming electricity costs of £0.24/kWh, that means a payback period of 15.7 years (thin film solar systems typically last between ten and 20 years).

If we could orientate the panel at the optimum angle of 37.6° (tilt them out from the edge of the balcony), the power generated would rise to 182 kWh/yr (a payback period of 11.4 years, although this could fall foul of planning rules).

A first-floor flat with two solar arrays tilted slightly over the balcony.
Balcony solar panels angled to achieve optimum performance.
Triplec85/Wikimedia, CC BY

Free from the shading of my neighbour on the top floor and angled optimally, output from a plug-in panel could rise to 370 kWh/yr (payback 5.6 years). But this is for south-facing balconies. An east- or west-facing balcony would produce 30% less power and a north-facing panel, half as much or less.

Is it worth it?

Another issue is that you can only use the generated electricity when you are in the house. If, for example, I’m out half the time the panels are generating power (which is likely), the payback period doubles – so they will probably never pay for themselves. A battery could help store power for use later, but that adds costs plus the hassle of wiring everything up.

Let’s look at a monocrystalline panel (these last longer than film and are more efficient) that is roof-mounted at the optimum angle (so it’s clear of any obstructions) and wired up to feed into the grid so any power you don’t use, you can sell it to the network.

An apartment building with panels mounted on the roof.
Rooftop solar panels on an apartment block in Berlin, Germany.
Georg Slickers/Wikimedia, CC BY

Assuming a 4kW monocrystalline array at an installation cost of £5,500, the online calculator estimates generation of 2,970 kWh/yr for a payback period of 7.7 years (on a system that will last 25-30 years). And that’s not even considering any possible grants that you might be eligible for.

Whether or not balcony solar is feasible is going to be very site-specific. If you have a balcony with an uninterrupted view south and you are not going to fall foul of any planning or electrical issues, it might be worth it.

If you face north, or there’s another building in the way, or your fuse box looks like a prop from Downton Abbey, less so. In many cases, a solar generator mounted at an optimum angle and exporting electricity to the grid might be a better idea, even if the initial installation costs are higher.


Don’t have time to read about climate change as much as you’d like?

Get a weekly roundup in your inbox instead. Every Wednesday, The Conversation’s environment editor writes Imagine, a short email that goes a little deeper into just one climate issue. Join the 45,000+ readers who’ve subscribed so far.


The Conversation

Dylan Ryan 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. Plug-in solar panels are the latest green energy trend – here’s what you need to know – https://theconversation.com/plug-in-solar-panels-are-the-latest-green-energy-trend-heres-what-you-need-to-know-260467

Togo’s ‘Nana-Benz’: how cheap Chinese imports of African fabrics have hurt the famous women traders

Source: The Conversation – Africa – By Fidele B. Ebia, Postdoctoral fellow, Duke Africa Initiative, Duke University

The manufacturing of African print textiles has shifted to China in the 21st century. While they are widely consumed in African countries – and symbolic of the continent – the rise of “made in China” has undermined the African women traders who have long shaped the retail and distribution of this cloth.

For many decades Vlisco, the Dutch textile group which traces its origins to 1846 and whose products had been supplied to west Africa by European trading houses since the late 19th century, dominated manufacture of the cloth. But in the last 25 years dozens of factories in China have begun to supply African print textiles to west African markets. Qingdao Phoenix Hitarget Ltd, Sanhe Linqing Textile Group and Waxhaux Ltd are among the best known.

We conducted research to establish how the rise of Chinese-made cloth has affected the African print textiles trade. We focused on Togo. Though it’s a tiny country with a population of only 9.7 million, the capital city, Lomé, is the trading hub in west Africa for the textiles.

We conducted over 100 interviews with traders, street sellers, port agents or brokers, government officials and representatives of manufacturing companies to learn about how their activities have changed.

“Made in China” African print textiles are substantially cheaper and more accessible to a wider population than Vlisco fabric. Our market observations in Lomé’s famous Assigamé market found that Chinese African print textiles cost about 9,000 CFA (US$16) for six yards – one complete outfit. Wax Hollandais (50,000 CFA or US$87) cost over five times more.

Data is hard to come by, but our estimates suggest that 90% of imports of these textiles to Lomé port in 2019 came from China.

One Togolese trader summed up the attraction:

Who could resist a cloth that looked similar, but that cost much less than real Vlisco?

Our research shows how the rise of China manufactured cloth has undermined Vlisco’s once dominant market share as well as the monopoly on the trade of Dutch African print textiles that Togolese traders once enjoyed.

The traders, known as Nana-Benz because of the expensive cars they drove, once enjoyed an economic and political significance disproportionate to their small numbers. Their political influence was such that they were key backers of Togo’s first president, Sylvanus Olympio – himself a former director of the United Africa Company, which distributed Dutch cloth.

In turn, Olympio and long-term leader General Gnassingbé Eyadéma provided policy favours – such as low taxes – to support trading activity. In the 1970s, African print textile trade was considered as significant as the phosphate industry – the country’s primary export.

Nana-Benz have since been displaced – their numbers falling from 50 to about 20. Newer Togolese traders – known as Nanettes or “little Nanas” – have taken their place. While they have carved out a niche in mediating the textiles trade with China, they have lower economic and political stature. In turn, they too are increasingly threatened by Chinese competition, more recently within trading and distribution as well.

China displaces the Dutch

Dating back to the colonial period, African women traders have played essential roles in the wholesale and distribution of Dutch cloth in west African markets. As many countries in the region attained independence from the 1950s onwards, Grand Marché – or Assigamé – in Lomé became the hub for African print textile trade.

While neighbouring countries such as Ghana limited imports as part of efforts to promote domestic industrialisation, Togolese traders secured favourable conditions. These included low taxes and use of the port.




Read more:
West Africans ditch Dutch wax prints for Chinese ‘real-fakes’


Togolese women traders knew the taste of predominantly female, west African customers better than their mostly male, Dutch designers. The Nana-Benz were brought into the African print textile production and design process, selecting patterns and giving names to designs they knew would sell.

They acquired such wealth from this trade that they earned the Nana-Benz nickname from the cars they purchased and which they used to collect and move merchandise.

Nana-Benz exclusivity of trading and retailing of African print textiles cloth in west African markets has been disrupted. As Vlisco has responded to falling revenues – over 30% in the first five years of the 21st century – due to its Chinese competition, Togolese traders’ role in the supply chain of Dutch cloth has been downgraded.

In response to the flood of Chinese imports, the Dutch manufacturer re-positioned itself as a luxury fashion brand and placed greater focus on the marketing and distribution of the textiles.

Vlisco has opened several boutique stores in west and central Africa, starting with Cotonou (2008), Lomé (2008) and Abidjan (2009). The surviving Nana-Benz – an estimated 20 of the original 50 – operate under contract as retailers rather than traders and must follow strict rules of sale and pricing.

While newer Togolese traders known as Nanettes are involved in the sourcing of textiles from China, they have lower economic and political stature. Up to 60 are involved in the trade.

Former street sellers of textiles and other petty commodities, Nanettes began travelling to China in the early to mid-2000s to source African print textiles. They are involved in commissioning and advising on the manufacturing of African print textiles in China and the distribution in Africa.

While many Nanettes order the common Chinese brands, some own and market their own. These include what are now well-known designs in Lomé and west Africa such as “Femme de Caractère”, “Binta”, “Prestige”, “Rebecca Wax”, “GMG” and “Homeland”.

Compared to their Nana-Benz predecessors, the Nanettes carve out their business from the smaller pie available from the sale of cheaper Chinese cloth. Though the volumes traded are large, the margins are smaller due to the much lower final retail price compared to Dutch cloth.

After procuring African print textiles from China, Nanettes sell wholesale to independent local traders or “sellers” as well as traders from neighbouring countries. These sellers in turn break down the bulk they have purchased and sell it in smaller quantities to independent street vendors.

All African print textiles from China arrive in west Africa as an incomplete product – as six-yard or 12-yard segments of cloth, not as finished garments. Local tailors and seamstresses then make clothes according to consumer taste. Some fashion designers have also opened shops where they sell prêt-à-porter (ready-to-wear) garments made from bolts of African print and tailored to local taste. Thus, even though the monopoly of the Nana-Benz has been eroded, value is still added and captured locally.

Since the COVID-19 pandemic, Chinese actors have become more involved in trading activity – and not just manufacturing. The further evolution of Chinese presence risks an even greater marginalisation of locals, already excluded from manufacturing, from the trading and distribution end of the value chain. Maintaining their role – tailoring products to local culture and trends and linking the formal and informal economy – is vital not just for Togolese traders, but also the wider economy.

The Conversation

Rory Horner receives funding from the British Academy Mid-Career Fellowship. He is also a Research Associate at the Department of Geography, Environmental Management and Energy Studies at the University of Johannesburg.

Fidele B. Ebia 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. Togo’s ‘Nana-Benz’: how cheap Chinese imports of African fabrics have hurt the famous women traders – https://theconversation.com/togos-nana-benz-how-cheap-chinese-imports-of-african-fabrics-have-hurt-the-famous-women-traders-260924

Historic ruling finds climate change ‘imperils all forms of life’ and puts laggard nations on notice

Source: The Conversation – Global Perspectives – By Jacqueline Peel, Professor of Law and Director, Melbourne Climate Futures, The University of Melbourne

Hilaire Bule/Getty

Climate change “imperils all forms of life” and countries must tackle the problem or face consequences under international law, the International Court of Justice (ICJ) has found.

The court delivered its long-awaited advisory opinion overnight. The momentous case opens the door for countries impacted by climate disasters to sue major emitting countries for reparations.

And citizens could seek to hold governments to account for a failure to safeguard their human rights if their own or other countries fail to take adequate action to ensure a safe climate.

Here’s what the court ruled – and the global ramifications likely to flow from it.

man giving speech in front of demonstration.
Vanuatu’s Climate Change Minister Ralph Regenvanu delivers a speech at a demonstration before the International Court of Justice issued its first advisory opinion on state’s legal obligations to address climate change.
John Thys/AFP

Climate change breaches human rights

The ICJ case was instigated by law students at the University of the South Pacific in Vanuatu in 2019. They successfully launched a campaign for the court to examine two key issues: the obligations of countries to protect the climate from greenhouse gases, and the legal consequences for failing to do so.

The court found a clean, healthy and sustainable environment is essential for the enjoyment of many other human rights. As such, it found, the full enjoyment of human rights cannot be ensured without the protection of the climate system and other parts of the environment.

The ruling confirms climate change is much more than a legal problem. Rather, the justices concluded, it is an:

existential problem of planetary proportions that imperils all forms of life and the very health of our planet.

Most nations have signed up to global human rights agreements such as the International Covenant on Civil and Political Rights. The ICJ ruling means parties to those agreements must take measures to protect the climate system and other parts of the environment.

An advisory opinion from the International Court of Justice is not legally binding. But it is an authoritative description of the state of the law and the rights of countries to seek reparations if the law is breached. As such, it carries great legal weight.

Just as climate science assessments of the Intergovernmental Panel on Climate Change have become the gold standard for understanding the causes and impacts of climate change, the court’s ruling provides a clear baseline against which to assess countries’ action, or inaction, on climate change.

Keeping 1.5°C alive?

In recent years, many states’ emissions reduction targets under the Paris Agreement have seemed to “settle” at levels which would hold global temperature increases to 2°C at best.

But the International Court of Justice ruled the much more ambitious 1.5°C goal had become the scientifically based consensus target under the Paris Agreement.

Some countries argued formal emissions targets should be left to the discretion of each government. However, the court found against this. Rather, each nation’s targets had to be in line with – and make an adequate contribution to – the global goal of holding heating to 1.5°C.

The court found each state’s emissions reduction pledges should be judged against a stringent “due diligence” standard. The standard takes into account each country’s historical contributions to emissions, level of development and national circumstances, among other factors.

The ruling means rich countries, such as Australia, will be required under international law to make more ambitious emission-reduction pledges under the Paris Agreement, such as for the 2035 target currently under consideration by the Albanese government.

The court decision also provides a measure of climate justice for small island states, which have historically low emissions but face a much higher risk of damage from climate change than other nations.

Holding states accountable for inaction

Because climate change is global, it is difficult – but not impossible – to attribute damage from extreme weather to the actions of any one nation or group of nations.

On this question, the court said while climate change is caused by the cumulative impact of many human activities, it is scientifically possible to determine each nation’s total contribution to global emissions, taking into account both historical and current emissions.

If a nation experiences damage caused by the failure of another nation, or group of nations, to fulfil international climate obligations, the ruling means legal proceedings may be launched against the nations causing the harm. It may result in compensation or other remedies.

For small, climate-vulnerable nations such as those in the Alliance of Small Island States, this opens more legal options in their efforts to encourage high-emitting nations to properly address climate change.

Importantly, the court made clear nations can be legally liable even if damage from climate change comes from many causes, including from the activities of private actors such as companies.

That means nations cannot seek an exemption because others have contributed to the problem. They must also act to regulate companies and other entities under their jurisdiction whose activities contribute to climate change.

pacific island, palm trees and beach.
Pacific Island nations emit very little but face huge threats from climate change.
Luca Turati/Unsplash, CC BY-NC-ND

Paris Agreement quitters aren’t safe

One line of argument put to the court by Australia and other states was that climate treaties represented the only obligations to tackle climate change under international law.

But the court found this was not the case. Rather, other international laws applied.

The United States pulled out of the Paris Agreement earlier this year. The court’s opinion means the US and other nations are still accountable for climate harms under other international laws by which all countries are bound.

Could this lead to greater climate action?

The International Court of Justice has produced a truly historic ruling.

It will set a new baseline in terms what countries need to do to address climate change and opens up new avenues of recourse against high-emitting states not doing enough on climate change.

The Conversation

Jacqueline Peel receives funding from the Australian Research Council under her Australian Laureate Fellowship and Kathleen Fitzpatrick Award on ‘Transforming International Law for Corporate Climate Accountability’.

ref. Historic ruling finds climate change ‘imperils all forms of life’ and puts laggard nations on notice – https://theconversation.com/historic-ruling-finds-climate-change-imperils-all-forms-of-life-and-puts-laggard-nations-on-notice-261848

Why Texas Hill Country, where a devastating flood killed more than 135 people, is one of the deadliest places in the US for flash flooding

Source: The Conversation – USA (2) – By Hatim Sharif, Professor of Civil and Environmental Engineering, The University of Texas at San Antonio

A Kerrville, Texas, resident watches the flooded Guadalupe River on July 4, 2025. Eric Vryn/Getty Images

Texas Hill Country is known for its landscapes, where shallow rivers wind among hills and through rugged valleys. That geography also makes it one of the deadliest places in the U.S. for flash flooding.

In the early hours of July 4, 2025, a flash flood swept through an area of Hill Country dotted with summer camps and small towns about 70 miles northwest of San Antonio. More than 135 people died in the flooding. The majority of them were in Kerr County, including more than two dozen girls and counselors at one summer camp, Camp Mystic. Dozens more people were still unaccounted for a week later.

The flooding began with a heavy downpour, with more than 10 inches of rain in some areas, that sent water sheeting off the hillsides and into creeks. The creeks poured into the Guadalupe River.

A river gauge at Hunt, Texas, near Camp Mystic, showed how quickly the river flooded: Around 3 a.m. on July 4, the Guadalupe River was rising about 1 foot every 5 minutes at the gauge, National Weather Service data shows. By 4:30 a.m., it had risen more than 20 feet. As the water moved downstream, it reached Kerrville, where the river rose even faster.

Flood expert Hatim Sharif, a hydrologist and civil engineer at the University of Texas at San Antonio, explains what makes this part of the country, known as Flash Flood Alley, so dangerous.

What makes Hill Country so prone to flooding?

Texas as a whole leads the nation in flood deaths, and by a wide margin. A colleague and I analyzed data from 1959 to 2019 and found 1,069 people had died in flooding in Texas over those six decades. The next highest total was in Louisiana, with 693.

Many of those flood deaths have been in Hill County. It’s part of an area known as Flash Flood Alley, a crescent of land that curves from near Dallas down to San Antonio and then westward.

The hills are steep, and the water moves quickly when it floods. This is a semi-arid area with soils that don’t soak up much water, so the water sheets off quickly and the shallow creeks can rise fast.

When those creeks converge on a river, they can create a surge of water that wipes out homes and washes away cars and, unfortunately, anyone in its path.

Hill Country has seen some devastating flash floods. In 1987, heavy rain in western Kerr County quickly flooded the Guadalupe River, triggering a flash flood similar to the one in 2025. Ten teenagers being evacuated from a camp died in the rushing water.

San Antonio, at the eastern edge of Hill Country, was hit with a flash flood on June 12, 2025, that killed 13 people whose cars were swept away by high water from a fast-flooding creek near an interstate ramp in the early morning.

Why does the region get such strong downpours?

One reason Hill Country gets powerful downpours is the Balcones Escarpment.

The escarpment is a line of cliffs and steep hills created by a geologic fault. When warm air from the Gulf rushes up the escarpment, it condenses and can dump a lot of moisture. That water flows down the hills quickly, from many different directions, filling streams and rivers below.

As temperature rise, the warmer atmosphere can hold more moisture, increasing the downpour and flood risk.

A tour of the Guadalupe River and its flood risk.

The same effect can contribute to flash flooding in San Antonio, where the large amount of paved land and lack of updated drainage to control runoff adds to the risk.

What can be done to improve flash flood safety?

First, it’s important for people to understand why flash flooding happens and just how fast the water can rise and flow. In many arid areas, dry or shallow creeks can quickly fill up with fast-moving water and become deadly. So people should be aware of the risks and pay attention to the weather.

Improving flood forecasting, with more detailed models of the physics and water velocity at different locations, can also help.

Probabilistic forecasting, for example, can provide a range of rainfall scenarios, enabling authorities to prepare for worst-case scenarios. A scientific framework linking rainfall forecasts to the local impacts, such as streamflow, flood depth and water velocity, could also help decision-makers implement timely evacuations or road closures.

Education is particularly essential for drivers. One to two feet of moving water can wash away a car. People may think their trucks and SUVs can go through anything, but fast-moving water can flip a truck and carry it away.

Officials can also do more to barricade roads when the flood risk is high to prevent people from driving into harm’s way. We found that 58% of the flood deaths in Texas over the past six decades involved vehicles. The storm on June 12 in San Antonio was an example. It was early morning, and drivers had poor visibility. The cars were hit by fast-rising floodwater from an adjacent creek.

This article, originally published July 5, 2025, has been updated with the death toll rising.

The Conversation

Hatim Sharif 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. Why Texas Hill Country, where a devastating flood killed more than 135 people, is one of the deadliest places in the US for flash flooding – https://theconversation.com/why-texas-hill-country-where-a-devastating-flood-killed-more-than-135-people-is-one-of-the-deadliest-places-in-the-us-for-flash-flooding-260555

Bali is built on informal and ‘illegal’ settlements. Bulldozing Bingin Beach misses the real threat of overdevelopment

Source: The Conversation – Global Perspectives – By Kim Dovey, Professor of Architecture and Urban Design, The University of Melbourne

Balinese officials have begun the demolition of more than 40 businesses at Bingin Beach, a popular tourist spot in the Uluwatu region.

In June, the Balinese House of Representatives determined the settlement is on public land, and is therefore illegal and needs to be demolished. But I’d argue it doesn’t.

The ‘illegal’ settlement

The Bingin Beach coastal settlement began development in the 1970s as an informal surfer hub at the base of a steep escarpment. The beach is a few hundred metres long and largely disappears at high tide.

Originally lined with a string of makeshift warungs (small food stores) and cheap accommodations, the settlement has grown incrementally over the decades, up and along the escarpment, with an intensive mix of surf shops, restaurants and small hotels.

The steepness of the slope precludes vehicle access. The only public access is via two somewhat narrow pedestrian stairways.

While it initially served the surfer community, the settlement now caters to a broader tourist market, with some rooms going for upwards of US$150 per night.

But after more than 50 years of incremental development, the House of Representatives has declared the settlement was illegally constructed on state land, and has ordered the demolition of 45 buildings – effectively the entire settlement.

While most of the buildings seem highly durable, the demolition order is based on illegality, and not durability. A spokesperson for the traders argues most of the businesses are locally owned, and livelihoods are at stake.

The ‘legal’ settlement

The former farmland at the top of the escarpment is also covered with tourist developments that mostly emerged since 2010, and now extend up to a kilometre inland. This is a much more familiar landscape for Bali: a mix of walled hotel compounds and private villas, with manicured gardens and swimming pools.

However, one could scarcely call this larger settlement “planned”. Shops and restaurants emerge wherever they can find a market along the narrow roads. There are no sidewalks and pedestrians are constantly engaged in an anxious game of negotiated passing.

The infrastructure of roads and lanes has also been designed incrementally, across the former farm fields, as the settlement developed. The resulting street network is convoluted and largely unwalkable. The most common street sign is “no beach access this way”.

What is informality?

I’m an academic, architect and urban planner who studies informal settlements and informal urbanism more generally. In this context “informal” can mean illegal, makeshift and unplanned, but it can also mean incremental, adaptive and inventive.

Informal settlement is the means by which a large proportion of Indonesians produce affordable housing. It is also the most traditional form of indigenous housing globally.

After many decades of governments trying to demolish such settlements, the overwhelming consensus across the United Nations Human Settlements Programme is that wholesale demolition is rarely an answer. On-site formalisation and upgrading is the more sustainable pathway.

When engaging with informal settlements, we need to preserve the infrastructures that work and only demolish where necessary. The Bingin Beach escarpment settlement has proven sustainable and has become an integral part of the local heritage.

Its demolition will destroy livelihoods and displace the surfing market, while feathering other nests.

So why is it being demolished? Perhaps to clear the ground for the next round of up-market resorts – what urban studies research calls “accumulation by disposession”. Bingin is widely seen as a major real estate hotspot for investment.

What is overdevelopment?

One of the key dangers of informal settlement is “overdevelopment”. Without
formal planning codes, density can escalate to destroy the very attraction that produced the settlement.

Most buildings along the Bingin Beach escarpment are two to four storeys, and step back with the slope of the escarpment. The exception is the 2019 addition of the Morabito Art Cliff hotel that rises more than six storeys, obscuring the natural landscape, blocking views, and setting a precedent for more of the same.

If everyone in the area built like this, the Bingin settlement would be replaced with a cliff of buildings. To demolish this one building would set a useful precedent of containing the settlement to a sustainable scale.

The Impossibles dream

A few hundred metres south-west of Bingin Beach, a different story unfolds near the beach known as Impossibles. Here, a precarious limestone cliff largely precludes access to the beach, and the clifftop has long been lined with low-rise tourist compounds.

An aeriel view of the Uluwatu coast shows Bingin Beach and the Impossibles.
Map data: Google, 2025 Maxar Technologies

This earlier layer of development is now being demolished and replaced with larger, denser resorts as part of the Amali project which claims a “rare cliff-front location”. The location is “rare” because about half of the 50-metre-high cliff has been excavated to construct villa units quite literally in the cliff.

This excavation was well underway when, in May 2024, it caused much of the remaining natural cliff face to collapse onto the beach and into the ocean. It remains unclear whether the excavation was formally approved. Either way, it prompts the question: what if everyone did that?

The Bingin escarpment and the Impossibles cliff face represent very different kinds of development. One is incremental, irregular and geared to its social and environmental context, while the other is large-grain and environmentally destructive. It makes no sense to demolish the former in order to make way for the latter.

It is imperative to not only save the Bingin Beach settlement, which is part of Bali’s surfing heritage, but also to awaken from the impossible dream of building more and more villas on this fragile and limited coastland.

The Conversation

Kim Dovey 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. Bali is built on informal and ‘illegal’ settlements. Bulldozing Bingin Beach misses the real threat of overdevelopment – https://theconversation.com/bali-is-built-on-informal-and-illegal-settlements-bulldozing-bingin-beach-misses-the-real-threat-of-overdevelopment-261755

Cycling’s governing body is introducing new rules to slow down elite riders. Not everyone’s happy

Source: The Conversation – Global Perspectives – By Popi Sotiriadou, Associate Professor of Sport Management – Director Business Innovation, Griffith University

MARCO BERTORELLO/AFP via Getty Images

Most sports look to support their athletes to become “faster, higher, stronger” – in reference to the Olympic Games’ original motto – so it is perhaps surprising that cycling’s world governing body is trying to slow down elite riders.

However, there’s good reason the Union Cycliste Internationale (UCI) recently announced new rules to slow riders down.

These rules – which apply to elite road and cyclo-cross mass-start events for men and women such as the Tour de France – come into place shortly and are aimed at improving rider safety.




Read more:
I rode the Tour de France to study its impact on the human body – here’s what I learned


What are the new rules?

From August 1, a new bicycle gearing regulation will kick in.

Professional cyclists will only be allowed to use a 54-tooth front chainring with an 11-tooth rear cog.

This replaces the current common setup of 54-10.

To put this into context, a 54-tooth chainring is the big front gear on a bike and the 11-tooth cog is a small rear gear. Moving to a slightly bigger cog (54-11) makes it harder to hit top speeds: the change from a 54-10 to a 54-11 gear setup could reduce the top speed by about 2.4 kilometres per hour.

Pro riders can reach incredible speeds during descents, sometimes surpassing 130 kilometres per hour.

Then, from January 1 2026, handlebars must become wider, increasing from a minimum 350–360 millimetres width (depending on the event) to at least 400mm wide.

The handlebar width affects how a rider controls their bike: narrower bars reduce frontal surface area, making a rider more aerodynamic which again means a faster ride.

This is especially useful in time trials or sprints.

Wider bars offer better stability and control, helping navigate tight turns, peloton traffic, or crosswinds.

The UCI has also announced plans to introduce a formal helmet approval protocol in 2027, which will include separate standards for helmets used in mass-start events and time trials.

This shift suggests helmets may soon be subject to the same pre-race approval process as frames and wheels, potentially leading to safer, more regulated head protection.

New rules, different opinions

Professional cycling is getting faster due to stronger athletes, better training and advanced, lighter equipment.

As a result, high-speed crashes, especially downhill or in crowded sprint finishes, have become more common and more dangerous.

The UCI maintain the new regulations are part of a broader strategy to mitigate speed-related risks, enhance safety and uphold the integrity of the sport.

However, these measures have sparked debate within the cycling community.

Some elite cyclists, particularly those who have suffered severe crashes and injuries, suggest it is time safety caught up with technology.

Wout van Aert, who suffered a severe knee injury in September 2024 during a wet descent, said:

Limiting the number of gears would make the sport much safer.

Chris Froome, four-time Tour de France winner, also said he supported strategies “to keep the speeds down on the descents”.

The Professional Cycling Council supports testing gear ratio limits.

It is also likely these changes could limit cutting-edge innovations that only wealthy teams can afford. This would in turn narrow technological disparities across teams.

Former pro Michael Barry though believes gear restrictions are not the answer, and the UCI should instead focus on improved course design and inspection, better barriers and crash protective clothing.

Technology experts agree, arguing speed is determined more by a rider’s power output and aerodynamic drag than by gear ratios. To enhance safety, they propose alternative solutions such as real-time rider tracking, crash-protective clothing, improved course design and inspection and faster medical response.

The wider handlebar rule has also stirred controversy, especially among smaller-framed riders, many of whom are women, who typically ride with 360–380mm handlebars for better comfort and control.

Under the new regulation, those forced to use bars that exceed their optimal fit range could end up suffering from poor wrist alignment, increased fatigue and a higher risk of repetitive strain injuries.

Despite the growth of women’s cycling, the UCI has not made exemptions for smaller riders, raising concerns a one-size-fits-all solution may compromise inclusively and safety.

Even though regular riders can continue to use the equipment they prefer, what happens in the pro world often shapes non-elite rider preferences and trends, and the bikes sold in stores. If narrower bars are banned at the top level, manufacturers may stop offering them.

Historically, advancements in aerodynamics, gear ratios and component weights seen in the pro peloton have become standard features on consumer bikes.

A delicate balance

The UCI’s new regulations mark a likely shift towards standardised equipment and heightened safety. This deliberate emphasis on safety naturally elevates awareness among all cyclists about the crucial link between equipment choices and rider wellbeing.

While these restrictions may foster a more level playing field, they also risk curbing the sport’s long-standing tradition of engineering innovation.

The very appeal of professional cycling has often been intrinsically tied to the relentless pursuit of technological advancements that yield even fractional competitive advantages.

Striking a balance between ensuring safety and preserving this spirit of ingenuity remains a crucial challenge for the sport’s future.

The Conversation

Popi Sotiriadou 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. Cycling’s governing body is introducing new rules to slow down elite riders. Not everyone’s happy – https://theconversation.com/cyclings-governing-body-is-introducing-new-rules-to-slow-down-elite-riders-not-everyones-happy-260917

Swirling nebula of two dying stars revealed in spectacular detail in new Webb telescope image

Source: The Conversation – Global Perspectives – By Benjamin Pope, Associate Professor, School of Mathematical and Physical Sciences, Macquarie University

The day before my thesis examination, my friend and radio astronomer Joe Callingham showed me an image we’d been awaiting for five long years – an infrared photo of two dying stars we’d requested from the Very Large Telescope in Chile.

I gasped – the stars were wreathed in a huge spiral of dust, like a snake eating its own tail.

An orange swirl on a black background with a blue dot in the middle.
The coils of Apep as captured by the European Space Observatory’s Very Large Telescope.
ESO/Callingham et al., CC BY

We named it Apep, for the Egyptian serpent god of destruction. Now, our team has finally been lucky to use NASA’s James Webb Space Telescope (JWST) to look at Apep.

If anything could top the first shock of seeing its beautiful spiral nebula, it’s this breathtaking new image, with the JWST data now analysed in two papers on arXiv.

Violent star deaths

Right before they die as supernovae, the universe’s most massive stars violently shed their outer hydrogen layers, leaving their heavy cores exposed.

These are called Wolf-Rayet stars after their discoverers, who noticed powerful streams of gas blasting out from these objects, much stronger than the stellar wind from our Sun. The Wolf-Rayet stage lasts only millennia – a blink of the eye in cosmic time scales – before they violently explode.

Unlike our Sun, many stars in the universe exist in pairs known as binaries. This is especially true of the most massive stars, such as Wolf-Rayets.

When the fierce gales from a Wolf-Rayet star clash with their weaker companion’s wind, they compress each other. In the eye of this storm forms a dense, cool environment in which the carbon-rich winds can condense into dust. The earliest carbon dust in the cosmos – the first of the material making up our own bodies – was made this way.

The dust from the Wolf-Rayet is blown out in almost a straight line, and the orbital motion of the stars wraps it into a spiral-shaped nebula, appearing exactly like water from a sprinkler when viewed from above.

We expected Apep to look like one of these elegant pinwheel nebulas, discovered by our colleague and co-author Peter Tuthill. To our surprise, it did not.

A black backfground with a swirling red spiral in the centre that brightens to an orange globe.
The ‘pinwheel’ nebula of the triple Wolf-Rayet star system WR104.
Peter Tuthill

Equal rivals

The new image was taken using JWST’s infrared camera, like the thermal cameras used by hunters or the military. It represents hot material as blue, and colder material in green through to red.

It turns out Apep isn’t just one powerful star blasting a weaker companion, but two Wolf-Rayet stars. The rivals have near-equal strength winds, and the dust is spread out in a very wide cone and wrapped into a wind-sock shape.

When we originally described Apep in 2018, we noted a third, more distant star, speculating whether it was also part of the system or a chance interloper along the line of sight.

The dust appeared to be moving much slower than the winds, which was hard to explain. We suggested the dust might be carried on a slow, thick wind from the equator of a fast-spinning star, rare today but common in the early universe.

The new, much more detailed data from JWST reveals three more dust shells zooming farther out, each cooler and fainter than the last and spaced perfectly evenly, against a background of swirling dust.

Three shells of dust, looking like coiled snakes, the middle one yellow and the outer ones red against a background of blue stars.
The Apep nebula in false colour, displaying infrared data from JWST’s MIRI camera.
Han et al./White et al./Dholakia; NASA/ESA

New data, new knowledge

The JWST data are now published and interpreted in a pair of papers, one led by Caltech astronomer Yinuo Han, and the other by Macquarie University Masters student Ryan White.

Han’s paper reveals how the nebula’s dust cools, links the background dust to the foreground stars, and suggests the stars are farther away from Earth than we thought. This implies they are extraordinarily bright, but weakens our original claim about the slow winds and rapid rotation.

In White’s paper, he develops a fast computer model for the shape of the nebula, and uses this to decode the orbit of the inner stars very precisely.

He also noticed there’s a “bite” taken out out of the dust shells, exactly where the wind of the third star would be chewing into them. This proves the Apep family isn’t just a pair of twins – they have a third sibling.

An illustration of the cavity carved by the third star companion in the Apep system.
White et al. (2025)

Understanding systems like Apep tells us more about star deaths and the origins of carbon dust, but these systems also have a fascinating beauty that emerges from their seemingly simple geometry.

The violence of stellar death carves puzzles that would make sense to Newton and Archimedes, and it is a scientific joy to solve them and share them.

The Conversation

Benjamin Pope receives funding from the Australian Research Council and the Big Questions Institute.

ref. Swirling nebula of two dying stars revealed in spectacular detail in new Webb telescope image – https://theconversation.com/swirling-nebula-of-two-dying-stars-revealed-in-spectacular-detail-in-new-webb-telescope-image-258314

Sweet spot for daily steps is lower than often thought, new study finds

Source: The Conversation – UK – By Jack McNamara, Senior Lecturer in Clinical Exercise Physiology, University of East London

Focus and blur.

Your fitness tracker might be lying to you. That 10,000-step target flashing on your wrist? It didn’t come from decades of careful research. It came from a Japanese walking club and a marketing campaign in the 1960s.

A major new study has found that 7,000 steps a day dramatically cuts your risk of death and disease. And more steps bring even greater benefits.

People hitting 7,000 daily steps had a 47% lower risk of dying prematurely than those managing just 2,000 steps, plus extra protection against heart disease, cancer and dementia.

The findings come from the biggest review of step counts and health ever done. Researchers gathered data from 57 separate studies tracking more than 160,000 people for up to two decades, then combined all the results to spot patterns that individual studies might miss. This approach, called a systematic review, gives scientists much more confidence in their conclusions than any single study could.

So where did that magic 10,000 number come from? A pedometer company called Yamasa wanted to cash in on 1964 Tokyo Olympics fever. It launched a device called Manpo-kei – literally “10,000 steps meter”. The Japanese character for 10,000 resembles a walking person, while 10,000 itself is a memorable round number. It was a clever marketing choice that stuck.

At that time, there was no robust evidence for whether a target of 10,000 steps made sense. Early research suggested that jumping from a typical 3,000 to 5,000 daily steps to 10,000 would burn roughly 300 to 400 extra calories a day. So the target wasn’t completely random – just accidentally reasonable.

This latest research paper looked across a broad spectrum – not just whether people died, but heart disease, cancer, diabetes, dementia, depression and even falls. The results tell a fascinating story. Even tiny increases matter. Jump from 2,000 to 4,000 steps daily and your death risk drops by 36%. That’s a substantial improvement.

But here’s where it gets interesting. The biggest health benefits happen between zero and 7,000 steps. Beyond that, benefits keep coming, but they level off considerably. Studies have found meaningful benefits starting at just 2,517 steps per day. For some people, that could be as little as a 20-minute stroll around the block.

Age changes everything, too. If you’re over 60, you hit maximum benefits at 6,000 to 8,000 daily steps. Under 60? You need 8,000 to 10,000 steps for the same protection. Your 70-year-old neighbour gets 77% lower heart disease risk at just 4,500 steps daily.

The real secret of why fitness targets often fail? People give up on them.

Research comparing different step goals found a clear pattern. Eighty-five per cent of people stuck with 10,000 daily steps. Bump it to 12,500 steps and only 77% kept going. Push for 15,000 steps and you lose nearly a third of people.

One major study followed middle-aged adults for 11 years. Those hitting 7,000 to 9,999 steps daily had 50-70% lower death risk. But getting beyond 10,000 steps? No extra benefit. All that extra effort for nothing. Other researchers watching people over a full year saw the same thing. Step programmes worked brilliantly at first, then people slowly drifted back to old habits as targets felt unrealistic.

Commuters walking across London Bridge.
Steps easily accumulate from everyday activities.
Marius Comanescu/Shutterstock.com

Most steps happen without you realising it

Here’s something that might surprise you. Most of your daily steps don’t come from structured walks or gym sessions. Eighty per cent happen during everyday activities – tidying up, walking to the car, general movement around the house.

People naturally build steps through five main routes: work (walking between meetings), commuting (those train station treks), household chores, evening strolls and tiny incidental movements. People using public transport clock up 19 minutes of walking daily just getting around.

Research has also found something else interesting. Frequent short bursts of activity work as well as longer walks. Your body doesn’t care if you get steps from one epic hike or dozens of trips up the stairs. This matters because it means you don’t need to become a completely different person. You just need to move a bit more within your existing routine.

So, what does this mean for you? Even 2,500 daily steps brings real health benefits. Push up to 4,000 and you’re in serious protection territory. Hit 7,000 and you’ve captured most of the available benefits.

For older people, those with health conditions, or anyone starting from a sedentary baseline, 7,000 steps is brilliant. It’s achievable and delivers massive health returns. But if you’re healthy and can manage more, keep going. The benefits climb all the way up to 12,000 steps daily, cutting death risk by up to 55%.

The 10,000-step target isn’t wrong exactly. It’s just not the magic threshold everyone thinks it is.

What started as a Japanese company’s clever marketing trick has accidentally become one of our most useful health tools. Decades of research have refined that original guess into something much more sophisticated: personalised targets based on your age, health and what you can actually stick to.

The real revelation? You don’t need to hit some arbitrary target to transform your health. You just need to move more than you do now. Every single step counts.

The Conversation

Jack McNamara 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. Sweet spot for daily steps is lower than often thought, new study finds – https://theconversation.com/sweet-spot-for-daily-steps-is-lower-than-often-thought-new-study-finds-261605

How public development banks could narrow inequality gaps between the Global North and South

Source: The Conversation – Canada – By Alicja Paulina Krubnik, PhD Candidate, Political Science, McMaster University

The United Nations’ Fourth International Conference on Financing for Development (FFD4) recently concluded in Seville, Spain. It gathered global leaders from government, development, academia and civil society to discuss key barriers to sustainable development and shape collaborative efforts to address them.

FFD4 comes at a crucial time, when the Action Agenda from the last FFD3, set 10 years ago, must be built upon and upheld. With only five years left to meet the UN’s Sustainable Development Goals (SDGs), more than 80 per cent are off track. More tangibly, 2030 is a key deadline for global emissions reduction.

The global aid environment is also in crisis, just as low- and middle-income countries face mounting pressures due to the interconnected impacts of climate change, environmental damage, poverty and inequality.

Boosting global co-operation

FFD4 was an opportunity to revitalize and transform international development co-operation to help states meet these challenges and pursue sustainable development.

Achieving this requires more than decarbonizing development financing. FFD4 faced its most testing challenge yet: how to reform the global financial systems that direct development resources.

Key factors include aligning funding with the sustainable development needs of low- and middle-income countries, increasing access to long-term concessional financing — loans or other forms of financing provided on terms more favourable than those in the market — and reducing public debt burdens.

Public development banks offer crucial leadership here. They provide affordable financing, direct resources where urgently needed and align funding with long-term development strategies, giving them significant potential to democratize project ownership.

Urgent human development needs

At the FFD4 gathering, many representatives, especially from Global South and climate-vulnerable countries, highlighted the inadequacy of development financing. Seedy Keita, the minister for finance and economic affairs from The Gambia, told the conference that as developing countries are being urged to invest more in climate and human development initiatives, they lack the tools to do so.

The countries facing the worst climate impacts also struggle with urgent human development needs. Adapting to and mitigating climate breakdown are inseparable from economic and social development, with human welfare — access to food, water and clean air, avoiding displacement and the safety of women and girls — intimately linked to climate.

Yet climate-vulnerable states receive a small share of global development financing, particularly for adaptation projects that yield lower returns. Additionally, resources for building value-added industries in low- and middle-income countries remain insufficient.

Scant commitment to action

Simply increasing financing is not enough. At the launch of the latest SDGs Report, UN Secretary General António Guterres stated:

“There is something fundamentally wrong in the structure of the economic and financial architecture and in the way it operates to the detriment of developing countries.”

In short, it’s too rigid and unresponsive to the Global South’s unique needs, ultimately constraining their ability to act on the SDGs.

The most ambitious and pressing outcome of FFD4, the “Sevilla Commitment,” addresses key issues in efforts to reform international financial systems but lacks commitment to strong, transformative action.

Too much priority is given to enabling low- and middle-income countries to access private finance for development. Using public development finance to mobilize private investments and lending has failed to close the financing gap.

Poverty and inequality worsens

Private support for the structural green transformation needed for long-term economic development in low- and middle-income countries remains inadequate, widening the divide between the Global North and South. The strategy of catalyzing private finance has shifted risk to public balance sheets while reserving most of the profits for private, often multinational corporations — what’s known as “de-risking.”

A privatized development strategy has pushed fiscal austerity measures on Global South countries to access international capital markets to fund development initiatives. Many of these countries are struggling with alarming debt, forcing them to divert scarce funds from essential services like health and education to service debts, which worsens poverty and inequality.

FFD4’s efforts to create a fairer debt system include scaling up debt swaps and forming an alliance between creditor countries and multilateral banks to implement debt “pause clauses” during crises. While many states called for deeper debt reforms and a UN convention on sovereign debt, several wealthy countries resisted bold changes.

They largely overlooked the Global North’s climate debt — estimated at $192 trillion. The Sevilla Commitment proposes launching a UN-led intergovernmental process, opening a potential path for creditor action.

As Spain’s economy minister put it, FFD4 is a “launchpad for action” not a “landing zone.”

Directing money to where it’s needed most

Public development banks have the potential to lead this action for a more prosperous and equitable future. They can mobilize under-utilized public resources more economically, rapidly and effectively to serve development goals in a climate-forward way.

These banks can direct finance to where it’s most needed, aligning with development priorities across diverse low- and middle-income countries.

Public development banks are also well-positioned to co-ordinate at multilateral, regional and national levels and to align global decarbonization goals to local demands. The largest coalition of banks, the Finance in Commons group, was recognized in the Sevilla Commitment. The group called for strengthening public development banks’ co-operation and leadership at the FFD4. Already a leader in global climate financing, further co-ordination among public debate banks could amplify its impact.




Read more:
Your essential guide to climate finance


Supporting green, equitable development

Structural change requires the long-term, affordable and counter-cyclical financing that public development banks can provide.

For indebted developing countries facing high borrowing costs, steadfast concessional financing is crucial. Beyond finance, public development banks have a privileged role in knowledge formation and dissemination, which can be leveraged alongside their financial power to support green and equitable development.

As public organizations, public development banks offer greater potential for transparency and accountability to democratic decision-making, aligning financing with public values. Beyond simply de-risking, these banks can leverage their financial power to generate broader public benefits.

The Conversation

Alicja Paulina Krubnik receives funding from the Social Sciences and Humanities Research Council and the International Development Research Centre.

ref. How public development banks could narrow inequality gaps between the Global North and South – https://theconversation.com/how-public-development-banks-could-narrow-inequality-gaps-between-the-global-north-and-south-261160