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Geoengineering Can Prevent Climate Tipping Points, But Delays Will Compromise Its Effectiveness

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Incorporating sunlight-reflecting particles into the atmosphere may help mitigate climate change

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Continuing to emit carbon dioxide poses significant threats, including the risk of triggering tipping points that can lead to major disruptions such as the shutdown of critical ocean currents. Current modeling indicates that injecting aerosols into the stratosphere to reflect sunlight could mitigate this risk, though the effectiveness diminishes significantly if it is initiated much later, such as in 2080.

“My conclusion is that if we are genuinely committed to preventing climate change, we must take solar radiation management seriously. This includes exploring its potential advantages and drawbacks,” declared Claudia Winners from Utrecht University in the Netherlands.

A tipping point signifies changes that are irreversible for centuries, including the slowing or stopping of critical marine currents that distribute immense amounts of heat, impacting the global climate.

One such current is the Atlantic Meridional Overturning Circulation (AMOC), which transfers heat from the tropics to Europe. A collapse of this system could instigate rapid sea level rises in North America, severe temperature decreases in Northern Europe, and significant disruptions to the Asian monsoon.

Stratospheric aerosol injection represents a proposed geoengineering method that involves the dispersal of sun-reflective particles in the upper atmosphere via airplanes, balloons, or rockets.

According to the model employed by Winners’ team, the strength of AMOC could decrease by over 50% in the coming century under a worst-case emissions scenario. However, utilizing stratospheric aerosol injections to maintain global temperatures around 1.5°C could significantly mitigate current weakening, as Winners explained at the Exeter Climate Conference held in the UK last week.

Indeed, AMOC would not dip below this scenario under aggressive emissions reductions without geoengineering. “So, for at least the next 80 years, the effectiveness of stratospheric aerosol injections is higher than the mitigation from greenhouse gases,” Winners stated.

However, the model indicates that AMOC would fail to recover if aerosol injections are delayed until 2080, especially if they are employed to bring global temperatures back above 1.5°C after an overshoot, as suggested by the model.

The team also examined subpolar gyres in the North Atlantic, a circular current linked to AMOC that circulates around areas where cold, saline water sinks. If this sinking process halts because the oceans become fresher and warmer, it will significantly affect the climate in Europe.

In a worst-case scenario, the model predicts that sinking will cease and that commencing stratospheric aerosol injections in 2080 would not reactive the process. However, if injections start now, subsidence could be preserved in two out of the three crucial regions.

Nevertheless, these findings necessitate validation through numerous studies examining more realistic emission scenarios, as there are potential risks involved, according to Winners. “You can really mess it up too,” she cautioned.

For successful geoengineering, sustained global cooperation over centuries will be paramount. “You might say this is the largest governance challenge humanity has ever faced,” articulated ethicist Stephen Gardiner during another session at the conference from Washington University in Seattle.

For instance, if stratospheric aerosol injections are only conducted in one hemisphere without a global consensus, Winners warns that it could alter tropical rainfall patterns worldwide.

In a subsequent presentation, Jim Heywood from the University of Exeter discussed another geoengineering method, known as marine cloud brightening, which demonstrated that localized interventions could potentially incite global climatic changes.

With the risks now understood, they can be circumvented, said Haywood. “It’s merely a shift in strategy.” Yet, many researchers remain skeptical about the feasibility of managing geoengineering risks.

“Solar radiation management sounds entirely manageable. Shouldn’t we refer to it as solar radiation interference?” Stephen Rahmstorf questioned Winners after her presentation at the University of Potsdam in Germany.

There is also a concern that geoengineering could be perceived as an alternative to emission reductions. “We are not addressing the root causes of climate change,” stated Winners. “It’s merely a symptom management strategy; however, if the symptoms deteriorate excessively, it may complement a true solution.”

Due to these concerns, some climate scientists oppose even investigating the potential risks and advantages of geoengineering. The topic has become so contentious that participants at at least one meeting opted out of a session focused on it.

Winners is not the first to assert that geoengineering might need to commence immediately to avert tipping points. Last year, two independent teams concluded that solar radiation management could prevent the collapse of the West Antarctic ice sheet, another significant tipping point.

“It stands to reason that delaying increases the risk of irreversible changes,” Winners mentioned to New Scientist following her presentation. “I believe that’s quite clear.”

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Source: www.newscientist.com

11-Year-Old Australian Girl Abused by Stranger After Adding Him for Snapchat Points

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An 11-year-old girl from Australia began adding random users on Snapchat as part of an unofficial challenge with her close friend to boost their scores on the app. Unfortunately, one of these individuals exploited her.

The 23-year-old Jai Clapp was added on Snapchat by the girl, who was using the pseudonym “April,” through a quick addition feature.

Your SNAP score reflects user engagement, accumulating points through sending and receiving snaps, maintaining streaks (where users consistently exchange messages), and adding friends.

Snapchat’s Quick Addition feature recommends users based on shared interests, as determined by the platform’s algorithm.

After being added, Clapp misled the girl about his age, claiming to be 17 instead of 23, and the court found that he groomed her over a span of 12 days on Snapchat.

He subsequently sexually assaulted the victim during three meetings at a local park near her home.

Clapp was convicted of digital and penile penetration, with Judge Marcus Dempsey labeling his behavior as “abhorrent.”

He pled guilty and was sentenced in April to eight years and ten months in prison, with a non-parole period of four years and eight months, as he also abused another girl while incarcerated.

Details of the case emerged from the county courthouse for Victoria’s ruling, released recently.


A spokesperson for SNAP, the parent company of the app, commented, “The sexual exploitation of minors is alarming, illegal, and against our policies.”

“Snapchat is intended to facilitate communication among friends known in real life, and we aim to make it as challenging as possible for minors to connect with strangers,” the spokesperson added.

“Teens are recommended as friends or in searches only under specific circumstances, such as when they share numerous mutual friends. Last year we introduced a new friend protection measure.”

An independent Snapchat guide advises parents to disable the Quick Add feature to restrict who can add their children on the app.

This December, Snapchat could be one of the platforms under Australian government restrictions preventing users below the age of 16 from accessing it, although the minimum account age is 13.

Before the proposed ban takes effect in December, affected platforms, including Snapchat, faced lawsuits from the government regarding policy implementation. The company regularly highlights its safety measures for children to uphold its current standing.

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During a submission to a Congressional investigation last year, Snap affirmed that the app does not allow teenagers to appear as suggested friends or in search results for others unless they share mutual friends.

In a linguistic analysis conducted last year, Australia’s online safety regulator, the Esafety Commissioner, noted that internal tools were utilized to estimate users’ ages to block access for those under 13. The Commissioner found that, as of February Report, 19% of children aged 8 to 12 used Snapchat in 2024.

The report indicated that SNAP had not conducted a survey in the first half of last year to gauge the number of users younger than 13.

A spokesperson for the ESAFETY Commissioner stated that companies have an obligation to ensure their platforms are secure for all users.

“Features such as Find Friends [Quick Add] can have numerous benefits; however, we must also consider how these new functions may be misused,” the spokesperson remarked.

“Concerns have existed for some time regarding the functionalities of social media and messaging services enabling predators to reach children for grooming and contact.

“[These] features can facilitate predators in accessing various groups of children’s friends through the platform’s algorithm, particularly when age verification measures are ineffective.”

A report by the Prevention Association for Cruelty to Children indicated that among the 7,000 cases of sexual communications with minors recorded by UK police from 2023 to 2024, 48% occurred on Snapchat.

  • Support and information for individuals affected by rape and sexual abuse can be found through the following organizations: In Australia, visit 1800 Respect (1800 737 732). In the UK, there is support available at Rape Crisis. In the US, call 0808 500 2222 or visit RAINN at 800-656-4673. Additional international helplines can be accessed at ibiblio.org/rcip/internl.html.

Source: www.theguardian.com

Five key points from Trump’s strategy to revive the coal industry

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The hard hat is back. So is coal that is “beautiful and beautiful.”

President Trump signed four executive orders on Tuesday to sought to bolster the country’s declining coal industry, including lifting mining restrictions and burning the dirtiest fossil fuels.

In addition to exempting air pollution restrictions and other coal regulations imposed by the Biden administration, Trump has directed the Justice Department to chase states like California, which aimed to tackle climate change by reducing the use of fossil fuels.

“I call it beautiful and clean coal. I tell people not to use the word ‘beautiful, clean’,” Trump said in the east room of the White House, surrounded by dozens of men wearing mainly stiff hats. “We are completely ending Joe Biden’s war on beautiful, clean coal.”

Here are five takeaways from Trump’s orders.

Trump has always loved coal miners as a masculine symbol.

At a White House ceremony on Tuesday, he repeatedly mentioned the Burley men who surrounded him, joking about whether the stage could handle their collective weight. He recalled that during the 2016 campaign against Hillary Clinton she was talking about Job Letrain for miners. “She was going to put them in the tech industry where you make little phones and things,” he said gestured at the hives and laughed.

Coal itself is a strong fossil fuel, he said. “A pound of pounds, coal is the single energy of the most reliable, durable, safe and powerful energy,” Trump said.

“It’s almost impossible to destroy,” he said. “You can drop a bomb on it and it will be there for you to use the next day.”

Coal releases more carbon dioxide when burned than any other fossil fuel, making it a major contributor to climate change. More mining and burning of coal adds to pollution that dangerously heats the planet, leading to more frequent and deadly heat waves, droughts, floods, sea level rise and faster melting of Greenland’s ice sheets, Trump said he hopes to win the US.

Scientists say that to avoid the most devastating effects of climate change, major economies like the United States must cut their emissions sharply, rather than increasing them.

Coal burning also releases other contaminants, including mercury and sulfur dioxide, which are associated with heart disease, respiratory problems and early death. Mining activities and coal ash from generated power plants pose environmental hazards.

No coal results were mentioned on Tuesday.

Regulations limiting the amount of contamination from coal-fired power plants have led to these plants operating more expensively and reduced industry profitability. But, as Trump said, “radical green” policy wasn’t the biggest reason for the decline in coal power over the past two decades. It was cheap natural gas by fracking.

In the mid-2000s, American excavators completed a method to unlock the enormous reserves of low-cost natural gas from Shalelock. The utility quickly realized that coal could be replaced with cheaper gas.

According to 2019 Survey At the RAND Journal of Economics, the energy market and low prices of natural gas account for almost all of the decline in coal plants’ profitability between 2005 and 2015, and as a result, retirements of hundreds of coal-fired power plants. “Environmental regulations had little impact on these outcomes,” the study found.

Trump says he wants to “drill, babe, drill” and lower gas prices.

“Did you notice that many law firms are signing up for Trump?” the president asked the crowd at a coal event Tuesday.

He was referring to the multi-million-dollar pro bono legal services some major law firms offered to the Trump administration after the president threatened to target him with executive orders.

One company covered by the executive order – Paul, Weiss – has promised concessions, including $40 million in pro bono work for a Trump-friendly cause, cutting deals with the White House. Three other companies – Milbank. Skadden, Arps;Wilky Far & Gallagher – Actively agreed to his deal with the White House.

On Tuesday, Trump indicated that these free legal services would be directed. It fights climate policy and supports the coal industry.

“We’ll use some of those companies to work with you on your leases and other things,” Trump told coal leaders.

Tuesday was a good day for the coal industry. Shares of mining company Peabody Energy rose 9%. Alliance Resource Partners led by billionaire coal tycoon Joseph W. Craft III, who led Trump’s fundraising during the presidential election, have risen nearly 5%.

But many experts are skeptical that Trump can do much to turn the coal outlook up. “Given the limitations on the use of emergency authorities and the symbolic nature of the order, we believe that Trump’s coal executive order is unlikely to have a significant impact on electricity and carbon markets,” wrote an analyst at Capstone, a research firm. They called the coal stock bumps on Tuesday a “overreaction.”

The average US coal plant is more than 50 years old, and it is often cheaper for utilities to generate electricity using a mix of gas, wind, solar and batteries. Analysts say these fundamentals are difficult to change.

Source: www.nytimes.com

Key Points from the Paris AI Summit: Global Inequalities, Energy Issues, and Elon Musk’s Influence on Artificial Intelligence

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    1. Aimerica First

    A speech by US vice president JD Vance represented a disruptive consensus on how to approach AI. He attended the summit alongside other global leaders including India’s Prime Minister Narendra Modi, Canadian Prime Minister Justin Trudeau and European Commission head Ursula von der Leyen. I did.

    In his speech at Grand Palais, Vance revealed that the US cannot be hampered by an over-focus on global regulations and safety.

    “We need an international regulatory system that promotes the creation of AI technology rather than strangle it. In particular, our friends in Europe should look to this new frontier, optimistic rather than fear. ” he said.

    China was also challenged. Vance worked with the “authoritarian” regime in warning his peers before the country’s vice-president Zhang Guoqing with a clear reference to Beijing.

    “Some of us in this room learned from our experience partnering with them, and what we’ve learned from your information to the authoritarian masters who try to penetrate, dig into your information infrastructure and seize your information. It means taking the country with you,” he said.

    A few weeks after China’s Deepshek rattles US investors with a powerful new model, Vance’s speech revealed that America is determined to remain a global leader in AI .

    2. Go by yourself

    Naturally, in light of Vance’s exceptionalism, the US refused to sign the diplomatic declaration on “comprehensive and sustainable” AI, which was released at the end of the summit. However, the UK, a major player in AI development, also rejected it, saying the document is not progressing enough to address AI’s global governance and national security implications.

    Achieving meaningful global governance for AI gives us even more distant prospects, as we failed to achieve consensus over seemingly incontroversial documents. The first summit held in Bletchley Park in the UK in 2023, at least voluntarily reached an agreement between major countries and high-tech companies on AI testing.

    A year later, the gathering in Bletchley and Seoul had been carefully agreed, but it was already clear by opening night that this would not happen at the third gathering. In his welcoming speech, Macron threw the shade with a focus on Donald Trump’s fossil fuels, urging investors and tech companies to view France and Europe as AI hubs.

    Looking at the enormous energy consumption required by AI, Macron said France stands out because of its nuclear reliance.

    “I have a good friend on the other side of the ocean who says, ‘drills, babes, drills’. There is no need to drill here. Plugs, babysitting, plugs. Electricity is available,” he said. We have identified various national outlooks and competitive trends at the summit.

    Nevertheless, Henry de Zoete, former AI advisor to Rishi Sunak on Downing Street, said the UK “played the blind man.” “If I didn’t sign the statement, I’d brought about a significant will with Trump’s administrators at almost cost,” he wrote to X.

    3. Are you playing safely?

    Safety, the top of the UK Summit agenda, has not been at the forefront of Paris despite continued concerns.

    Yoshua Bengio, a world-renowned computer scientist and chairman of the major safety report released before the summit, told the Guardians of Paris that the world deals with the meaning of highly intelligent AI. He said that it wasn’t.

    “We have a mental block to the idea that there are machines that are smarter than us,” he said.

    Demis Hassabis ir, head of Google’s AI unit, called for Unity when dealing with AI after there was no agreement over the declaration.

    “It’s very important that the international community continues to come together and discuss the future of AI. We all need to be on the same page about the future we are trying to create.”

    Pointing to potentially worrying scenarios such as powerful AI systems behave at first glance, he added: They are global concerns that require intensive and international cooperation.

    Safety aside, some key topics were given prominent hearings at the summit. Macron’s AI envoy Anne Boubolot says that AI’s current environmental trajectory is “unsustainable” and Christy Hoffman, general secretary of the UNI Global Union, says that AI is productivity at the expense of workers. He said that promoting improvements could lead to an “engine of inequality.” ‘ Welfare.

    4. Progress is accelerating

    There were many mentions of the pace of change. Hassavis said in Paris that the theoretical term for AI systems that match or exceed human on any intellectual task is “probably five years or something apart.”

    Dario Amodei, CEO of US AI company Anthropic, said by 2026 or 2027, AI systems will be like a new country that will take part in the world. It resembles a “a whole new nation inhabited by highly intelligent people who appear on the global stage.”

    Encouraging governments to do more to measure the economic impact of AI, Amodei said advanced AI could represent “the greatest change to the global labor market in human history.” I’ve warned.

    Sam Altman, CEO of ChatGpt developer Openai, has flagged Deep Research, the startup’s latest release, released at the beginning of the month. This is an AI agent, a term for a system that allows users to perform tasks on their behalf, and features the latest, cutting-edge model O3 version of OpenAI.

    Speaking at the Fringe Event, he said the deep research was “a low percentage of all tasks in the world’s economy at the moment… this is a crazy statement.”

    5. China offers help

    Deepseek founder Liang Wenfeng had no shortage of discussion about the startup outcomes, but he did not attend the Paris Summit. Hassavis said Deepshek was “probably the best job I’ve come out of China.” However, he added, “There were no actual new scientific advances.”

    Guoqing said China is willing to work with other countries to protect security and share AI achievements and build a “community with a shared future for humanity.” Zhipu, a Chinese AI company in Paris, has predicted AI systems that will achieve “consciousness” by 2030, increasing the number of claims at the conference that large capacity AI is turning the corner.

    6. Musk’s shadow

    The world’s wealthiest person, despite not attending, was still able to influence events in Paris. The consortium led by Elon Musk has launched a bid of nearly $100 billion for the nonprofit that manages Openai, causing a flood of questions for Altman, seeking to convert the startup into a for-profit company.

    Altman told reporters “The company is not on sale,” and repeated his tongue counter offer, saying, “I’m happy to buy Twitter.”

    We were asked about the future of Openai’s nonprofit organizations. This is to be spun as part of the overhaul while retaining stocks in the profit-making unit. Things…and we’re completely focused on ensuring we save it.

    In an interview with Bloomberg, Altman said the mask bid was probably an attempt to “slow us down.” He added: “Perhaps his life is from a position of anxiety. I feel the man.”

Source: www.theguardian.com

Is doomscrolling truly deteriorating our mental health? The evidence points towards an undeniable truth

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IIf you want to witness the last vestiges of human intelligence swirling down the drain, just hold your nose and type these words:Skibidi toilet” to YouTube. The 11-second video features an animated human head sticking out of a toilet bowl while singing the gibberish lyrics, “Skibbidi dop dop yes yes.” The clip has been viewed more than 215 million times and generated hundreds of millions of references on TikTok and other social media.

It's only fitting, then, that the Oxford English Dictionary has announced “brain rot” as the word of the year. As an abstract concept, brain rot is something we are all vaguely aware of. The dictionary defines it as “an assumed mental or intellectual state of a person, especially seen as a result of overconsumption of material (now especially online content) considered trivial or unchallenging” is defined as “deterioration''. But few people realize how much technology is literally rotting our brains, and how compulsive internet use is destroying our gray matter.

Brain rot was foreshadowed about 20 years ago when scientists studied the effects of a new invention called “email,” specifically the effects of a relentless barrage of information on the brains of its participants. result? Continuous cognitive overload was more harmful than cannabis consumption, with participants' IQs dropping by an average of 10 points.

and this is before The advent of smartphones has made the internet so readily available that the average adult in the UK now spends at least 4 hours a day online (Gen Z men spend 5.5 hours online per day; Gen Z women spend 6.5 hours online).

In recent years, there has been a wealth of academic research from institutions such as Harvard Medical School, Oxford University, and King's College London. found the evidence What is the Internet? shrink our gray matter, shorten attention spanweakens memory and distorts cognitive processes. The areas of the brain found to be affected include “attentional capacity,” “memory processes,” and “social cognition” is included.

Paper after paper tells us how vulnerable we are to internet-induced brain rot. “High levels of internet use and heavy media multitasking are associated with decreased gray matter in the prefrontal cortex.” find one. People who are addicted to the Internetstructural changes in the brain” and “reduced gray [sic] Case” Some scholars even refer to the use of too much technology during the developing brain as “dangerous.”digital dementia”.

2018, 10 years of data Analyzed by a leading memory psychologist Researchers at Stanford University found that people who frequently use multiple online platforms have shorter memory and attention spans.

Yet we seem to be doing little to stem the tide. Earl Miller, a neuroscientist at the Massachusetts Institute of Technology and a world expert on divided attention, predicts that by 2022 we are currently living in a “perfect storm of cognitive decline.” I warned you. Dr. Gloria Mark, Professor of Information Studies, University of California, Author attention spanwe found evidence of how dramatically our ability to concentrate has declined. In 2004, her research team found that the average attention span on any screen is two and a half minutes. In 2012 it was 75 seconds. Six years ago, it was down to 47 seconds. “I think this is something that we should be very concerned about as a society,” she says. talked about it on the podcast In 2023.

But if technology is making us less intelligent, we are not entirely to blame. After all, it is designed to completely captivate us. Silicon Valley's dirtiest design feature, and once you find it, it's everywhere: infinite scroll. Likened to “”fartbottomless soup bowl” In an experiment, participants continued to eat from the soup bowl without thinking if they kept refilling it. Online feeds that are constantly “replenished” manipulate the brain’s dopaminergic reward system in a similar way. These powerful dopamine-driven endless “exploration” loops become addicted.

What happens if we fail to address cognitive decline? Tristan Harris, former Google design ethicist told the US Congress In 2019, billions of people, with a “psychological footprint roughly the size of Christianity,” now receive information from the platform, but the business model is such that “revenue is tied to attention.” “This creates a “race to the bottom of the brainstem.'' Hack our lizard brains to get attention, trigger dopamine, fear, anger, and win. ”

His warning is the most severe yet. “Persuasion technology is a hugely undervalued but powerful force shaping the world,” he said. “It controls the pen of human history, and if we don't take it back, it will destroy us.”

The term brain rot has been popularized online by young people most at risk of its effects. The fact that those most at risk are the most aware of the problem is encouraging news. The first step to change is understanding the problem. And there is reason to be hopeful. In recent years, teenagers have turned their attention to Danphones. Childhood without smartphones;Green is budding towards a future where we can reclaim our hearts. After all, perhaps Skibidi Toilet has a more poignant meaning, a recognition of where human intelligence currently stands. You can now proceed in one of two directions: upwards or through a U-bend.

Source: www.theguardian.com