Category: MIL-OSI

Source: The Conversation – UK – By Anja Shortland, Professor in Political Economy, King’s College London

The art market is riddled with fakes and forgeries. Yet in most countries, those trading in genuine masterpieces are left to their own devices when it comes to monitoring art sales – creating their own ways to flag problematic objects and verify the authenticity of others.

New art laws in Greece, however, suggest the country is taking the business of art legislation more seriously.

In-depth scrutiny can be extremely lucrative for sellers of art. A reputation for selling only the highest-quality art attracts both moneyed collectors and art investors, with competitive bidding driving prices into the stratosphere.

High commissions pay for entire departments of specialists in major auction houses, as well as connoisseurs, academic researchers and companies offering forensic, art historic and legal advice.

Online marketplaces often adopt a radically different approach to selling art: little or no scrutiny, vague claims of authenticity, and a clear norm of “caveat emptor” (buyer beware).

Anyone buying in this market benefits from low prices for attractive objects, but buyers should not expect them to pass scrutiny in terms of authenticity or legitimacy.

Once you start looking closely, the art market turns out to be segmented into several distinct sub-markets, each with its own rules of play that assure a certain minimum quality. Each institutionalised level of due diligence generates greater buyer trust, and justifies a price premium over the lightly monitored cheap and cheerful objects traded as “collectibles” on internet platforms.

Read more:
Selling stolen art is tricky, so why even bother heisting it? An expert explains

The new art laws in Greece suggest the state may be interested in tidying up the unregulated chaos of this market. It has specifically criminalised the creation and intended distribution of fakes and forgeries for the art and collectibles market, and their misrepresentation as higher value objects to potential buyers.

For those convicted, there is a sliding scale of penalties, depending on the volume and value of the intended fraud. Objects deemed fakes or forgeries may be impounded and destroyed.

Forgeries are big business in the mid-market, which deals in artworks priced from a few hundred to tens of thousands of pounds. In 2024, Italian police forces dismantled a trans-European network producing and distributing sophisticated replicas of the works of Banksy, Gustav Klimt, Andy Warhol and Picasso with an estimated market value of €200 million (£174 million).

In 2025, German police seized forged Rembrandt, Frida Kahlo and Picasso paintings intended for sale for millions of Euros. They arrested ten people including an elderly man who provided the seller with fake authentication services.

Given the depth of knowledge in the art market, the reliance on a single “expert” report in many cases suggests there could be a degree of cooperation between forgers, buyers and the distributors of their works.

The new Greek law names and targets all aspects of this value chain. It allows the police to intervene and seize objects even before a sale has taken place. Intended fraud – for example, advertising a forged painting as a genuine masterpiece – is sufficient to merit an investigation.

It is, though, highly unlikely that the Greek police will proactively search for fakes and forgeries. The expertise to identify fraud is held in the art world, and police will continue to rely on tip-offs from experts.

Forgeries mostly come to the attention of genuine experts when a fraud victim tries to resell or donate an artwork to a museum – usually many years after acquiring it. For the scammed collector, the best way forward is to return the object to the seller for a refund. As they have a reputation to protect, dealers are often surprisingly amenable to hushing up the problem.

However, the art world is a close and gossipy community, so information of several suspicious objects from the same source spreads. The re-examination of other artworks connected to that seller sometimes turns up more problems. If the seller is unresponsive to peer pressure, a consensus may emerge that they should be put out of business. It is often only at this point that the police are approached.

The new laws in Greece establish a sound basis for the trial and conviction of egregious fraudsters. They have already been used against the business of a well-known art dealer in Athens, whose stock is alleged to have included hundreds of fakes and forgeries. The dealer now faces charges on multiple offences – including embezzlement, fraud and money laundering, all of which are denied.

The sliding scale of penalties – including lengthy prison terms and significant fines – will probably change the behaviour of dealers and auctioneers who may have laughed off previous sanctions, tempted by excellent profit margins.

In Greece, at least, it is now less attractive to sell fishy objects, and riskier to do so repeatedly. The threat of destroying identified forgeries may backfire, however.

While withdrawing forgeries from circulation protects subsequent buyers, it can also make it less likely that owners choose to investigate or report issues of authenticity. So, the positive short-term effects of this well-intended package of laws may eventually turn negative, as it discourages information about fraud to come to light.

Anja Shortland 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. Greece’s new laws crack down on art fakes and forgeries – an expert in the market for shady art explains why they might backfire – https://theconversation.com/greeces-new-laws-crack-down-on-art-fakes-and-forgeries-an-expert-in-the-market-for-shady-art-explains-why-they-might-backfire-280386

Source: The Conversation – UK – By Ed Macaulay, Lecturer in Physics and Data Science, Queen Mary University of London

The Artemis II mission to the Moon is a voyage unlike any other in more than half a century. As the first crewed lunar flight since 1972, Artemis II marks the beginning of a new chapter in our relationship with the Moon.

Nasa’s goal is to establish a sustained human presence on the Moon. As the Artemis II ten-day journey concludes, it will be remembered as a profound moment in the history of human spaceflight. Stunning photos and video downlinked to Earth have provided a human perspective on this historic encounter with our celestial neighbour. The experience has rekindled the optimistic spirit of the Apollo era for a new generation.

The mission did not orbit the Moon. Instead, the Orion spacecraft carried the astronauts on a gravity guided loop around Earth’s natural satellite. During their flight, the crew – Reid Wiseman, Victor Glover, Christina Koch and Jeremy Hansen – travelled further into space than any previous human mission.

They reached a maximum distance of 252,756 miles from Earth, exceeding a distance record set by Apollo 13. Afterwards, mission specialist Jeremy Hansen challenged the next generation of explorers “to make sure this record is not long-lived”.

This challenge underscores the current focus of human space exploration. After decades sending its astronauts to low Earth orbit, the US space agency is looking outward again, not just to the Moon, but also Mars.

The mission began with a textbook launch of the Orion spacecraft on the Space Launch System (SLS) rocket from Kennedy Space Center in Florida. After a day in Earth orbit, Orion’s main engine performed a nearly six minute burn, known as the translunar injection (TLI), to send the capsule on its lunar trajectory.

As Orion headed to the Moon, commander Reid Wiseman captured a stunning view of our home planet. The beautiful image, dubbed Hello, World, shows Earth at night, illuminated only by reflected sunlight from the Moon.

The mesmerising green light of auroras at the poles and the arc of zodiacal light (a faint glow of sunlight scattered by interplanetary dust) highlighted how thin Earth’s atmosphere is.

The image immediately drew comparisons with the iconic Blue Marble photograph taken during the Apollo 17 lunar mission in 1972; the last time humans viewed the entirety of Earth with their own eyes.

Lunar flyby

On the morning of April 6, as the lunar flyby approached, mission control played the crew a special message from astronaut Jim Lovell, recorded before his death in 2025. Lovell is a link to Nasa’s trailblazing past, having flown on both the Apollo 8 mission, the first to reach the Moon, and Apollo 13.

“Welcome to my old neighborhood!” Lovell said. “When Frank Borman, Bill Anders, and I (flew) on Apollo 8, we got humanity’s first up-close look at the Moon… I’m proud to pass that torch on to you.”

His words must have inspired the four astronauts as they began scientific observations of 30 key sites on the lunar surface. These included impact craters and volcanic features on the Moon’s near side and its far side – the face pointed away from the Earth.

The astronauts found the time to name a crater after Reid Wiseman’s wife Carroll, who died of cancer in 2020. In a touching moment, Jeremy Hansen was overwhelmed with emotion as he informed mission control of their suggestion.

Discovering Earth

As Orion travelled behind the Moon, the crew witnessed the blue crescent of Earth setting below the lunar horizon. A photograph, named Earthset, has already become a classic space image. It recalls the legendary Earthrise photograph taken by astronaut Bill Anders during Apollo 8 in 1968.

Earthrise was a defining picture of the Apollo era – credited with inspiring the environmental movement in the 1970s. As Bill Anders commented: “We came all this way to explore the Moon, and the most important thing is that we discovered the Earth.”

Anders may have been one of the first astronauts to articulate the “overview effect”. This affects some astronauts while viewing Earth from space. They describe being awestruck by our planet’s beauty and fragility. An enhanced sense of connection to humanity is often reported, as well as a profound feeling of responsibility for the environment.

After Orion emerged from behind the Moon, the crew was treated to a spectacular hour-long solar eclipse. As a mostly darkened Moon blocked out our parent star, the astronauts photographed the Sun’s faint atmosphere, the corona, which was made visible by the eclipse.

They also witnessed flashes of light from meteoroids (small space rocks) impacting the Moon – to the visible delight of scientists at mission control in Houston. Researchers want to understand the dynamics of these impact events, as well as the risk they could pose to future missions.

In his message, Lovell had reminded the astronauts to enjoy the view during their busy flyby. The astronauts later described the strong emotions they felt. Christina Koch said: “I just had an overwhelming sense of being moved by looking at the Moon. It lasted just a second or two… but something just threw me in suddenly to the lunar landscape and it became real.”

Victor Glover added: “I went straight where Christina went, and I was walking around down there on the surface, climbing and off-roading on that amazing terrain.”

Artemis II has shared the astronauts’ sense of wonder with people around the world. Those who have followed the mission will be left with a new appreciation of humankind’s place in the cosmos. The incredible images and human moments offered an unprecedented window into a voyage of pure exploration.

Earlier this year, Nasa’s administrator Jared Isaacman announced a bold new vision for the agency’s Artemis lunar programme, including an increased launch frequency for the SLS rocket and concrete plans for a permanent Moon base.

That vision of the future is off to an extraordinary start. For humanity, a new adventure is just beginning.

Ed Macaulay 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. As Nasa’s Artemis II Moon mission ends, a new adventure for humanity beckons – https://theconversation.com/as-nasas-artemis-ii-moon-mission-ends-a-new-adventure-for-humanity-beckons-280238

Source: The Conversation – UK – By Matilde Rosina, Assistant Professor in Global Challenges, Brunel University of London

The UK government is planning to make it significantly harder for migrants to obtain permanent residence. If the proposals go ahead, the UK would become more restrictive than most other high-income democracies. In the case of refugees it would create a situation that is arguably without precedent among peer countries.

The UK’s home secretary, Shabana Mahmood, intends to double the qualifying period for indefinite leave to remain (ILR) (the UK’s form of permanent residence) from five to ten years for most migrants, and increase it up to 20 for some.

Eligibility requirements would also tighten. Migrants would need a clean criminal record (removing the previous 12-month sentence threshold), a higher English language standard and earnings above £12,570 per year for at least three years. This will disproportionately affect those least likely to be in full-time employment, including dependants of people on work visas, family visa holders and refugees.

The ten-year baseline for settlement would then be adjusted up or down based on individual circumstances. High-skilled workers, including NHS nurses and doctors, or those earning above £125,140, for instance, could qualify after five or three years respectively. Those on family visas (such as those married to a British citizen) or who are judged to be making efforts at “integration” such as by volunteering in the community could qualify after five to seven years. Those who have claimed benefits would have to wait up to 20 years, while for those who have entered the country illegally or overstayed their visa would have to wait up to 30 years to settle.

Read more:
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For low-skilled workers, the qualifying period would start at 15 years. For refugees it would be 20, with no reductions available unless the person works or studies. In this case, their status would convert to a Protection Work and Study visa, subject to review every 30 months.

The government has cited the increasing number of people granted settlement as one of the drivers behind the reforms. This figure has been rising since 2017, reaching 163,000 in the year ending June 2025. The Home Office projects this figure will increase significantly over the next five years.

The reforms are also framed as a response to irregular migration. The government has cited the Danish model as inspiration, arguing that the longer timeframe will “strongly discourage” entry without documents and reduce the “pull factors” attracting people to the UK. However, research suggests that deterrence-based policies like this are a weak tool for reducing immigration: decisions to migrate are driven primarily by conditions in countries of origin, not by entitlements in destination countries.

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The Home Office has claimed these amendments do not require legislation, meaning they do not need to be put to a parliamentary vote. But opponents have signalled the intention to force a symbolic vote to make their views clear. Much of the concern has to do with the plans to apply the changes retrospectively.

An international outlier

These proposals would make the UK an outlier compared to other major economies. In the EU, the closest equivalent to ILR is the long-term resident status for third country nationals. This requires people to live in the EU on a valid visa for at least five years, and confers long-term residence with limited conditions. This exists alongside national schemes, such as Italy’s Permesso di Soggiorno UE per soggiornanti di lungo periodo and Germany’s Niederlassungserlaubnis that follow a similar approach.

Denmark and Ireland are the only two EU member states that opted out of the EU-level scheme. These countries have special arrangements for immigration and asylum policy (just like the UK did, before Brexit). They set their thresholds at eight and five years respectively, with Denmark’s reducible to four in some cases.

The UK government claims that making refugee status temporary and increasing the time for permanent residency contributed to asylum applications reaching a 40-year low in Denmark in 2025. However, this drop coincided with broader EU-wide trends in asylum flows, making it difficult to attribute the decline to domestic policy changes alone.

Among Anglophone countries, the picture is similar. The US green card confers permanent residence without a formal minimum years requirement. Though in practice, the vast majority of employment-based applicants previously held a temporary visa. Canada has no blanket time requirements, and refugees admitted through resettlement schemes can obtain permanent residency immediately.

Raising the standard qualifying period for permanent residence to ten years would make the UK more restrictive than most other comparable democracies in Europe and North America, and one of the strictest globally. Extending it to 20 years for refugees would make the UK’s approach unprecedented among peer countries.

These new requirements are closer to those of some of the hardest countries to achieve permanent residency such as Qatar and Japan, which require 20 and ten years respectively, for most cases.

Research suggests that migration policies which make migrants’ status temporary make them less likely to integrate. In particular, a study on Denmark found that making permanent residence harder to obtain for refugees reduced the chances of them being employed. People who believed they could not meet the new requirements became discouraged and disengaged from the labour market – the opposite of what the government wanted.

The UK’s proposed changes risk producing a similar dynamic, trapping people into what has been described as an “extended limbo”. Given these risks, the government should be careful in treating this approach as an end in itself when it comes to increased immigration.

Matilde Rosina 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. The UK could make migrants wait up to 20 years before becoming settled – making it one of the longest waits in the world – https://theconversation.com/the-uk-could-make-migrants-wait-up-to-20-years-before-becoming-settled-making-it-one-of-the-longest-waits-in-the-world-279036

Source: The Conversation – UK – By Sarah Golding, Postgraduate MSK Lecturer, School of Sport, Rehabilitation and Exercise Sciences, University of Essex

Osteoarthritis affects around 600 million people globally. It causes pain, stiffness and reduced joint function – most commonly in the knees, hands and hips.

There’s currently no cure for osteoarthritis. Many people manage the condition through exercise, maintaining a healthy weight, using walking aids and medications.

Commonly used medications include anti-inflammatories and opioids. While these help some, they also carry downsides – including significant side-effects, particularly in over-60s, and risk of addiction from long-term opioid use.

Joint replacement surgery can be very effective for relieving pain and improving mobility, but waiting lists in the last two years hit an all time high, due to increasing demands and reduced capacity since the COVID pandemic.

Surgery also carries risks such as infection, blood clots and nerve damage. Joint replacement surgery is typically suitable for those with advanced stage osteoarthritis.

So how else can osteoarthritis be treated?

Corticosteroid injections, commonly known as steroid injections or cortisone, have been used for joint pain for more than 70 years. They offer a rapid, effective way of reducing pain.

Corticosteroids are anti-inflammatory drugs able to reduce inflammation and pain associated with osteoarthritis. Injecting corticosteroid directly into the joint means it has maximum effect where needed, while minimising effects on the rest of the body.

The effects of steroid injections can last for months, reducing the need for surgery and reliance on prescription drugs. Those most likely to benefit from steroid injections have persistent pain which disrupts sleep and function, and who find other medications unsuitable or ineffective.

But as effective as steroid injections can be, their effects will vary from person to person. They may not be as effective in severe cases of osteoarthritis, as they only reduce inflammation and cannot repair damaged or lost cartilage.

Steroid injections may also risk accelerating arthritis or causing bone problems in some people, particularly if used in high doses or too often. Routine use in early stages of osteoarthritis is therefore generally avoided. This is because steroid injections can damage cartilage and bone cells which may further weaken and damage the joint.

Steroid injections may also not be suitable for people already taking high doses of steroids for other health problems (such as rheumatoid arthritis or asthma), and those who have a weakened immune system or are otherwise unwell. Taking too much artificial steroid affects the body’s production of natural steroid, which is essential for our metabolism.

Steroid injections may increase risk of infection following surgery if an injection has been given beforehand. For this reason, the majority of surgeons a minimum of three months between your last injection before surgery.

Although side-effects from steroid injections are fortunately rare, people need to be aware of these to make an informed decision about treatment. These can include: infection, allergic reaction, bleeding, bruising, skin colour changes, temporary flare in pain, bone and joint changes and increased blood sugar levels in those with diabetes.

It’s advised that injections aren’t performed more than every three to four months to reduce risk of side-effects and accelerating the arthritis. With hip injections there is need to be more cautious due to risks of cartilage and bone damage from even just one injection .

Managing joint health

Depending on the country, you may be able to have a steroid injection done by your GP, a nurse or a physiotherapist.

Within the UK, first contact physiotherapists working in primary care are accessible in the same way the GP is, many are trained and can offer early access to steroid injections. Injections may be provided within a GP surgery, however hip and spine injections are usually guided by ultrasound or X-ray imaging, which may only be available within a hospital.

Since injections can temporarily reduce osteoarthritis pain, this provides a window of opportunity within which to start exercising. Exercise is important for managing osteoarthritis, as it can strengthen joint-supporting muscles and reduce pain. Physical activity can even be beneficial for those planning to undergo joint replacement surgery as it can improve pain, function and length of hospital stay after surgery.

After injection, it’s recommended people initially rest for a few days, but then gradually increase the amount of exercise they undertake. A physiotherapist can advise on the best types of exercise you can do to help manage your osteoarthritis.

Addressing other contributing factors is essential for managing osteoarthritis, as well. There’s strong evidence linking various metabolic factors to osteoarthritis – such as obesity, diabetes, high cholesterol and high blood pressure. These factors increase inflammation within the body, which affects cartilage in joints. Losing weight where needed is also hugely beneficial in reducing strain on joints.

For those who may not want to use steroid injections, there are other options.

Hyaluronic acid injections, for instance. These help our natural joint lubrication, called synovial fluid. In osteoarthritis, synovial fluid has less viscosity and levels are reduced. Hyaluronic acid is also believed to work as an anti-inflammatory.

Similar to steroid injections, they can reduce pain and increase movement and function. They may be more beneficial to people with earlier stage osteoarthritis and may theoretically have fewer negative effects to cartilage. There may also be value in combining the two types of injection.

Hyaluronic acid has a similar safety profile to corticosteroid, with few reported side-effects. It may, however, take up to 12 weeks for effects to show – though the benefits can last up to six months.

Accessibility is limited in the UK, hyaluronic acid is not currently recommended within NICE guidelines, primarily due to cost effectiveness, so may only be available to those privately funding their care.

Joint injections are not a cure for osteoarthritis. They can have variable effects, and work best combined with other management approaches (such as weight loss and exercise). But with long wait times for surgery, they may offer a valuable way to reduce pain and manage the condition.

Sarah Golding works for the University of Essex, who provide teaching for healthcare professionals on injection therapy.

– ref. Steroid injections for joint pain: everything you need to know about using them – https://theconversation.com/steroid-injections-for-joint-pain-everything-you-need-to-know-about-using-them-279491

Source: The Conversation – UK – By Amalendu Misra, Professor of International Politics, Lancaster University

Since the early days of Cuba’s 1950s revolution – which overthrew the US-backed dictatorship of Fulgencio Batista and replaced it with a socialist government led by Fidel Castro – the Cuban diaspora have played a large role in determining the island nation’s economic and political landscape.

The first wave of predominantly wealthy, white Cuban emigrants have for decades campaigned for a watertight embargo against their homeland. Many fled immediately after the revolution succeeded in 1959, primarily to the US, and have largely refused to visit their homeland on principle.

More recent Cuban emigrants who have left the island (again overwhelmingly to the US) since the economic crisis of the 1990s, are generally less affluent and have less political clout. They have forged cross-border links with friends and family members who remain on the island. Through the remittances they send back, these people are now a vital source of foreign currency for Cuba.

The regime in Havana has traditionally maintained a disdainful attitude towards the Cuban diaspora. In the early waves of migration, Cuba’s government officially referred to those who emigrated as gusanos (worms) – traitors aiming to overthrow the government. Expat investment in Cuba was subsequently banned.

But following recent negotiations with the US, this policy posture has changed significantly. After decades of restricting its relationship with the diaspora, the Cuban government announced in March 2026 that it would allow Cuban emigrants residing in places like the US to return to the country, invest in the private sector and own businesses.

In an interview with NBC News on March 16, Cuba’s minister of foreign trade and investment, Oscar Pérez-Oliva Fraga, said: “Cuba is open to having a fluid commercial relationship with US companies and also with Cubans residing in the United States and their descendants.”

Washington’s blessings

The policy change comes as Cuba desperately attempts to rescue its devastated economy. A slew of economic and fuel embargoes imposed by the US government since Donald Trump returned to the White House in January 2025 have led to a severe crisis in the country.

Many Cubans are struggling to find food, medicine and other essential goods, while severe energy shortages are causing periods of complete blackout across the nation. The situation has become so dire that, for the first time in six decades, sporadic protests have broken out against the Cuban government.

In one of these protests, people in the central city of Morón ransacked a Communist Party headquarters. Videos on social media showed a group of people approaching the building with flaming objects, shouting “freedom, freedom” as they threw them inside.

The current state of affairs in Cuba has presented the US with an opportunity to orchestrate regime change – something it has sought for years. And proclamations by Trump and his secretary of state, Marco Rubio, suggest this may well be the US government’s intention.

In comments made to reporters in March, Trump said he believes he will have “the honour of taking Cuba”. He added: “Whether I free [Cuba], take it – I could do anything I want with it. You want to know the truth? They’re a very weakened nation right now.”

Rubio, who is the son of Cuban emigrants and has traditionally been hawkish about delivering regime change in Cuba, then declared: “Who’s going to invest billions of dollars in a communist country run by incompetent communists? … Giving people economic and political freedom is important, but they come hand in hand. They come together.”

Despite this rhetoric, many in Washington remain cautious about triggering an outright collapse of the regime. State collapse would almost certainly lead to an increase in the flow of Cuban refugees to the US – something the Trump administration wants to avoid.

While weakened, the regime in Havana remains in place. The extended Castro family still wields considerable power and influence in the country. The men leading the talks with the US, Fraga and Raúl Rodríguez, are two of Fidel Castro’s great-nephews.

Cuba’s president, Miguel Díaz-Canel, has said he will not resign under US pressure. He told NBC News on April 9 that “the concept of revolutionaries giving up and stepping down [is] not part of our vocabulary”.

Russia’s deputy foreign minister, Sergei Ryabkov, later said that Moscow, a longstanding ally of the regime in Havana, had no intention of abandoning Cuba.

Despite publicly calling for fundamental reform to the power structure in Havana, Washington’s approach towards Cuba seems primarily aimed at using its leverage to encourage the regime to make concessions that diminish the island’s value to US adversaries.

The US government has encouraged Havana to open its doors to expat investment before. Under the presidency of Barack Obama, who is credited with reestablishing diplomatic relations with Havana in 2009 after half a century of diplomatic blockades, the flow of people and remittances between the US and Cuba expanded.

This warming of relations created some opportunities for increased investment in Cuba, both by US citizens and Cuban emigrants. But the Cuban government maintained significant restrictions on large investments by Cubans living abroad, which hindered the full potential of foreign investment.

Fast forward to today, and the far more desperate economic and political situation in Cuba has made the regime in Havana more open to the demands of the US to restructure its governance. At this juncture, Cuba’s diaspora can be a much-needed catalyst for change in their home country.

Amalendu Misra is a recipient of British Academy and Nuffield Foundation Fellowships.

– ref. Cubans living abroad now hold the key to their country’s uncertain future – https://theconversation.com/cubans-living-abroad-now-hold-the-key-to-their-countrys-uncertain-future-279695

Source: The Conversation – UK – By Mokgadi Miranda Hlongwane, Lecturer, Department of Chemistry, Tshwane University of Technology

The growing use of toxic agricultural chemicals including fertilisers is also driving a scaling up of sustainable agrochemical alternatives.

In South Africa, I’ve been exploring why small-scale farmers resist switching to these more cost-effective and environmentally friendly solutions, such as “biological fertilisers”. Rural small-scale farmers are hesitant about these non-toxic bacterial alternatives because they aren’t readily available or widely understood.

One such biological fertiliser is made from rhizobia. This bacteria converts atmospheric nitrogen into a nutritional form that can be absorbed easily by the roots of plants known as legumes. This process is called “nitrogen fixing”.

Biological fertilisers harness the power of these nitrogen-fixing bacteria to enhance the growth of legume crops such as bambara nuts, common bean and soybean, by making soil nutrients more available. Legumes are cost-effective and protein-rich crops.

My PhD research showed how rhizobia improves the growth of cancer bush, a multipurpose plant native to South Africa. Rhizobia also enhances the therapeutic effect of medicinal plants such as cancer bush, which is traditionally used as an anti-inflammatory treatment or to boost the immune system.

Some rhizobia tolerate extreme environmental conditions and can enhance plant growth even during drought. Rhizobia also improve soil health, increase microbial diversity and nutrients.

Unlike chemical fertilisers which easily wash away when it rains, rhizobia-based biological fertilisers persist in the soil for a long time. This means repeat applications aren’t often required.

Growing up in rural South Africa, I saw how small-scale farmers were hugely dependent on chemical fertilisers. Today, many of these farmers today are aware of the negative effects of synthetic chemical fertilisers. Yet they continue to use them.

Chemical fertilisers reduce soil fertility and pollute the environment. Synthetic agricultural chemicals like these can cause eutrophication – when nutrients such as phosphorus and nitrogen overload streams and rivers, causing excessive algal growth. This depletes oxygen in the water and poisons aquatic life.

In contrast, Rhizobia-based fertiliser technology is cost-effective, non-toxic and sustainable. But even with hundreds of these fertilisers now on the market, their adoption among small-scale farmers remains very low.

Reasons for reluctance

To understand why farmers resist adopting sustainable alternatives, I spent a day in Phiring, a village in Limpopo Province, South Africa. This farming community still relies heavily on financial support from the government to pay for agricultural supplies such as fertilisers.

I spoke to 15 farmers about their cultivation practices and perceptions of both rhizobia-based and chemical fertilisers. Restricted access to biological fertilisers and limited knowledge about their correct application discouraged them from switching. Most farmers wanted to know where to buy biological fertilisers and how best to use them.

One farmer noticed that his farm had a low crop yield compared to more recently established farms. The soil on his land had probably deteriorated due to extendsive use of chemical fertilisers over a decade.

Some farmers wrongly assumed that crops treated with biological fertilisers would grow slowly, rot quickly and have a low crop yield. As a result, they had not tried these alternatives to chemical fertilisers.

Convenience and access

This challenge is compounded by the abundant supply of chemical fertilisers. The Comprehensive Agricultural Support Programme is an initiative from the Department of Agriculture, Forestry and Fisheries that supports small-scale farmers across South Africa. It provides vast amounts of chemical fertilisers for free.

Research on the low uptake of climate‑smart agriculture technologies identifies limited funding, low awareness and poor access to agricultural inputs as key barriers. Providing biological fertilisers through the same government programme would significantly increase adoption.

The farmers told me that their choice of cultivation practices is influenced both by convenience and access. Most farmers learn from their peers and seldom follow the instructions from the fertiliser manufacturers, so are likely to over- or underdose.

They rarely conduct soil analysis. This makes it difficult to select fertilisers that are suitable for their land, soil conditions or crop. In these cases, soil health further deteriorates and crop productivity declines.

The farmers I spoke to acknowledged their lack of knowledge about fertiliser applications, cultivation systems and available alternatives.

When legume crops are treated with rhizobia fertilisers, the increased nutrients and microbial diversity in the soil can also benefit non-legumes such as maize and wheat. this can happen through intercropping (simultaneously planting non-legume with legumes) or rotational cropping (planting legumes in one season and another crop in the same field the next).

There is huge potential for farmers to gain by switching from conventional agrochemicals to rhizobia-based fertilisers – but first, the financial constraints and misconceptions must be addressed.

Mokgadi Miranda Hlongwane receives funding from the South African National Research Foundation and the Elsevier Foundation.

– ref. South Africa’s farmers aren’t yet replacing chemical fertilisers with sustainable alternatives – this is why – https://theconversation.com/south-africas-farmers-arent-yet-replacing-chemical-fertilisers-with-sustainable-alternatives-this-is-why-278144

Source: The Conversation – UK – By Elva Arulchelvan, Lecturer in Psychology and PhD Researcher in Psychology and Neuroscience, Trinity College Dublin

As a researcher investigating how electric brain stimulation can improve people’s powers of recollection, I’m often asked how memory works – and what we can do to use it more effectively. Happily, decades of research have given us some clear answers to both questions.

Memory essentially operates in three stages, with different brain regions contributing to each one.

Sensory memory, which can last only milliseconds, registers raw information such as sights, sounds and smells. These are first processed by the brain’s five primary sensory cortices (visual cortex for sights, auditory cortex for sounds and so on).

Working (short-term) memory holds and manipulates a small amount of information over several seconds or more. Think of this as your brain’s mental workspace: the system that lets you do mental arithmetic, follow instructions and comprehend what you’re reading. So it mainly involves the prefrontal cortex – the front part of your brain that supports attention, decision-making and reasoning.

Finally, long-term memory stores information more permanently, from minutes to a lifetime. This includes both “explicit” memories (facts and life events) and “implicit” ones (skills, habits and emotional associations).

For long-term memories, the hippocampus and temporal lobes – located deep within the brain, around the sides of your head near your temples – contribute largely to memories involving facts or life events, while the amygdala (near the hippocampus), cerebellum (at the back of the brain) and basal ganglia (deep in the brain) process emotional or procedural memories.

Working memory often acts as a conscious gateway to long-term memory – but it has its limits. In 1956, the American psychologist George Miller proposed that we can only hold about seven “chunks” of information in our working memory at any time.

While the exact number is debated to this day, the principle holds: working memory is limited. And that limitation can shape how effectively we learn and remember things.

But you can also get your memory working more effectively. Here are five easy steps for improving both your working and long-term memory.

1. Put your phone away

Smartphones reduce your working memory capacity. Even just having a phone nearby – no matter if it’s face down and on silent – can reduce performance on memory and reasoning tasks.

The reason is that part of your brain is still subtly monitoring it. Even resisting the urge to check notifications consumes mental resources – which is why researchers sometimes call smartphones a “brain drain”. The solution is simple: put your phone in another room when you need to focus. Out of sight really does free up mental capacity.

2. Stop your mind racing

Stress and anxiety can take up valuable mental space. When you’re worrying about something or are distracted by racing thoughts, part of your working memory is already in use.

Relaxation training and mindfulness practices can improve both working memory and academic performance, probably by reducing stress levels. And if meditation feels intimidating, try breathing techniques such as “cyclic sighing”. Inhale deeply through your nose, take a second shorter inhale, then slowly exhale through your mouth. Repeating this for five minutes can calm the nervous system and create better conditions for learning.

3. Get chunking

Everyone can expand their working memory using the technique of chunking – grouping information into meaningful units. In fact, you probably already do it to remember some phone numbers or lists of words – breaking long sequences into bite-size chunks that your brain can recall as a mini-group.

The same principles apply if you’re delivering a presentation, to help your audience remember your key points more effectively. Chunking would involve grouping ten case studies, say, into three or four themes, each with a short headline and single key takeaway.

Repeat this structure on each slide: one idea, a few supporting details, then move on. By organising information into meaningful patterns, you reduce cognitive load and make it more memorable.

4. Become a retriever

In the 19th century, German psychologist Hermann Ebbinghaus demonstrated how quickly we forget information after learning it. Within about 30 minutes, we lose roughly half of what we have learned, with much more fading over the next day. Ebbinghaus called this the forgetting curve. The light blue line on the chart below illustrates this.

The forgetting curve – and how to disrupt it

However, there is a way of ensuring that more sinks in when you are trying to learn a lot of information in a short period of time: retrieval practice.

When preparing to give a talk or studying for an exam, rather than simply rereading your notes, keep testing how much you remember. Use flash cards, answer practice questions, or try explaining the material out loud without notes.

Memory works through associations. Each time you successfully retrieve information, you link the material to new prompts, examples and contexts. This builds more cues to accessing the information, and strengthens each memory pathway. Often when we “forget”, the memory isn’t gone – we just lack the right retrieval cue.

5. Give yourself a break

Research shows that memory is more effective when study or practice sessions are spread out, rather than massed together. If you are studying for an exam, build solid blocks of downtime into your revision schedule. The dark blue line on the chart above illustrates how spacing out your practice sessions can help you remember more information over time, by adjusting Ebbinghaus’s forgetting curve.

One study suggests leaving gaps between each revision session that equate to 10-20% of the time left until your exam or presentation. So, if your deadline is five days away and you do hours of revision a day, you should still take between a half and full day off in between sessions. In other words, don’t overdo it – you probably won’t see the rewards!

If you only remember one thing from this article about improving memory, make it this. Memory isn’t just about intelligence, it’s about strategy. Small changes in how you study or work can make a real difference in how well, and how long, you remember crucial information.

Elva Arulchelvan 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. Five tips to make your memory work more effectively – https://theconversation.com/five-tips-to-make-your-memory-work-more-effectively-280327

Source: The Conversation – UK – By Valerie van Mulukom, Visiting Lecturer in Psychology, Coventry University

We live in what has been called the “distraction economy”: an environment full of triggers that are engineered to demand our attention at every turn. The result is often fragmented attention, loss of focus and sometimes even increased rumination and anxiety.

Becoming fully absorbed in an activity is rare. Think of a time a film was so engrossing that you didn’t reach for your phone – the film-watching experience was no doubt the better for it. You can actively seek out this experience, which is known as “flow”. Hobbies are a great way to find a flow state and make outside distractions – work emails, unread messages, breaking news and chores – disappear.

The concept of flow was developed by Hungarian-American psychologist Mihaly Csíkszentmihályi. In his seminal 1990 book on the topic, he describes flow as: “A state in which people are so involved in an activity that nothing else seems to matter; the experience is so enjoyable that people will continue to do it even at great cost, for the sheer sake of doing it.”

Hobbies can bring joy, wellbeing, and focus to our busy lives, but so many of us don’t have one. If you’re ready to replace scrolling with stitching, or hustle with horticulture, The Hobby Starter Kit (a new series from Quarter Life) will help you get going.

Reviews of neuroscientific evidence show that being in a flow state reduces mind wandering by suppressing brain activity in the so-called default mode network. This set of brain regions covers much of the self-referential processing we do, including our inner critic. Being able to “go with with flow” is thus directly related to not having such reflective or ruminative thoughts.

The reduction of the mind-wandering brain activation means there can be more efficient activation of attention networks. During a simulated car-racing task, researchers showed that objective mental effort and gaze focus were highest during flow conditions, even though participants reported the experience as more effortless. Flow doesn’t mean less attention – it means that attention is so efficiently allocated to the task that self-monitoring and distraction fall away.

However, flow is not the same as “hyperfocus”. In fact, they can be negatively correlated with each other. In a study with 85 college students with and without attention deficit hyperactivity disorder (ADHD), students with clinically significant ADHD symptoms reported higher hyperfocus, but lower flow on many measures. The key difference seems to lie in control: flow is directed and intentional, whereas hyperfocus tends to happen to you. But that raw capacity for absorption may be an asset – with the right conditions, like clear goals and a well-matched challenge, it could be channelled into genuine flow.

How to find your flow

Hobbies are a great mechanism for finding a flow state. Sports have been extensively researched as a flow-inducing activity. In a study of 188 junior tennis players, concentration on the task and sense of control were the two aspects of flow that most strongly predicted whether a player won or lost their match. However, it is not just about winning. A study with 413 young athletes aged 12-16, found that participants who were focused on effort and improvement, rather than winning, reported more flow.

Music is another rich domain for flow. In a survey of daily practice, 35 music students aged 12-18 indicated that concentration, emotion and clear goals were central to achieving flow. Eighty percent of the teenagers reported that being able to choose their own repertoire was a highly significant motivational factor.

Another study found that the balance between the challenge of a musical passage and the musician’s perceived skill consistently predicted the flow experience. Flow might also buffer against performance anxiety: when 27 student musicians were tracked over the course of a semester, it was found that when flow was at its highest, performance anxiety was at its lowest, and vice versa.

If neither sports nor music are your thing, you may want to consider games. In a project I recently ran with a student, we investigated flow during tabletop role-playing games such as Dungeons and Dragons, and compared it to video games. Being in a flow state was associated with greater satisfaction with social interactions with friends, in particular for those who played tabletop games.

For those who play video games, gaming was associated with high monotropic flow – being so absorbed it is difficult to quit playing. These findings align with other research showing that a flow state during gaming can be so absorbing it makes you go to bed later – something to consider before picking up a new hobby.

Another form of role-playing is theatre and drama. In my previous work, I found that acting students experience significantly more flow than psychology students when they imagine scenarios as fictional people (like Romeo and Juliet), but not when imagining scenarios as oneself or one’s best friend. This reflects the effects of developing a practised skill. And, staying in a flow state while acting might ultimately culminate in a high-level performance.

Committing to a hobby and finding your flow might not only help you reduce outside noise (work or social media distractions), but also your own internal noise, such as mind wandering or rumination. Becoming fully absorbed in an activity is rare in the world of distractions, but can pay off for your brain.

Valerie van Mulukom 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. Feeling distracted? How hobbies can help you find ‘flow state’ and save your brain – https://theconversation.com/feeling-distracted-how-hobbies-can-help-you-find-flow-state-and-save-your-brain-278738