The UK's most hazardous nuclear site, Sellafield, has been hacked into by cyber groups closely linked to Russia and China, the Guardian can reveal. From the report: The astonishing disclosure and its potential effects have been consistently covered up by senior staff at the vast nuclear waste and decommissioning site, the investigation has found. The Guardian has discovered that the authorities do not know exactly when the IT systems were first compromised. But sources said breaches were first detected as far back as 2015, when experts realised sleeper malware -- software that can lurk and be used to spy or attack systems -- had been embedded in Sellafield's computer networks.

It is still not known if the malware has been eradicated. It may mean some of Sellafield's most sensitive activities, such as moving radioactive waste, monitoring for leaks of dangerous material and checking for fires, have been compromised. Sources suggest it is likely foreign hackers have accessed the highest echelons of confidential material at the site, which sprawls across 6 sq km (2 sq miles) on the Cumbrian coast and is one of the most hazardous in the world.

Long-time Slashdot reader destinyland summarizes a video report from CNN: : CNN anchor Jake Tapper interviewed TikTok's head of public policy last year, asking if they censored content critical of the Chinese party. "We do not censor content on behalf of any government," the spokesperson answered.

But this week CNN reviewed data the total number of hashtags on both Instagram and on TikTok for topics that might be embarrassing to the Chinese government — and found stark differences.

— Hashtag #Uyghurs appears in 10.4X more posts on Instagram than on TikTok.
— Hashtag #Tiananmen (referencing the 1989 pro-democracy protests) is 153 more likely to appear on Instagram than on TikTok.

"So yes, the content exists on TikTok, but there's far less of it on TikTok than on other social media apps," CNN's Tapper says. "And that seems very convenient for the Chinese Communist Party."

An anonymous reader shares a report: To wean their country off imported oil and gas, and in the hope of retiring dirty coal-fired power stations, China's leaders have poured money into wind and solar energy. But they are also turning to one of the most sustainable forms of non-renewable power. Over the past decade China has added 37 nuclear reactors, for a total of 55, according to the International Atomic Energy Agency, a un body. During that same period America, which leads the world with 93 reactors, added two.

Facing an ever-growing demand for energy, China isn't letting up. It aims to install between six and eight nuclear reactors each year. Some officials seem to think that target is low. The country's nuclear regulator says China has the capacity to add between eight and ten per year. The State Council (China's cabinet) approved the construction of ten in 2022. All in all, China has 22 nuclear reactors under construction, many more than any other country. The growth of nuclear power has stalled in Western countries for a number of reasons. Reactors require a large upfront investment and take years to construct. The industry is heavily regulated.

China, though, has smoothed the path for nuclear power by providing state-owned energy companies with cheap loans, as well as land and licences. Suppliers of nuclear energy are given subsidies known as feed-in tariffs. All of this has driven down the price of nuclear power in China to around $70 per megawatt-hour, compared with $105 in America and $160 in the European Union, according to the International Energy Agency, an official forecaster. China is not immune to the safety concerns that have turned many in the West against nuclear power. After the disaster at Japan's Fukushima Dai-ichi nuclear plant in 2011, China temporarily put its construction programme on hold. It has maintained a ban on inland nuclear plants, which have to use river water for cooling. Earlier this year China reacted angrily when Japan began releasing treated and totally harmless wastewater from the Fukushima plant into the ocean.

Montana's first-of-its-kind state ban on TikTok has been blocked by a U.S. judge, saying it "oversteps state power and infringes on the constitutional rights of users." Reuters reports: TikTok, which is owned by China's ByteDance, did not immediately comment Thursday. The company sued Montana in May, seeking to block the U.S. state ban on several grounds, arguing that it violates the First Amendment free speech rights of the company and users. TikTok users in Montana also filed suit to block the ban. TikTok said in a court filing it "has not shared, and would not share, U.S. user data with the Chinese government, and has taken substantial measures to protect the privacy and security of TikTok users."

Molloy, who was appointed to the bench by Democratic President Bill Clinton, found merit to numerous arguments raised by TikTok in his opinion. During an October hearing, Molloy questioned why no other state had followed Montana in banning TikTok and asked if the state was being "paternalistic" in arguing the ban was necessary to protect the data of TikTok users. Montana could have imposed fines of $10,000 for each violation by TikTok in the state but the law did not impose penalties on individual TikTok users.

China is waging a growing number of cyberattacks on neighboring Taiwan, according to cybersecurity experts at Alphabet's Google. From a report: Google has observed a "massive increase" in Chinese cyberattacks on Taiwan in the last six months or so, said Kate Morgan, a senior engineering manager in Google's threat analysis division, which monitors government-sponsored hacking campaigns. Morgan warned that Chinese hackers are employing tactics that make their work difficult to track, such as breaking into small home and office internet routers and repurposing them to wage attacks while masking their true origin.

"The number of groups in China that are performing hacking and trying to get into technology companies or get into cloud customers is huge," Morgan said. "I don't have the exact number, but it is probably over 100 groups that we are tracking just out of China alone." The hackers are going "after everything," including defense sector, government and private industry on the island, she said. Google's findings come as concerns have grown over the prospect of a conflict in Taiwan. The relationship between the US -- Taiwan's top military backer -- and China has deteriorated in recent years over a wide range of issues including Taiwan, human rights and a race to dominate advanced technologies such as chips, quantum computing and artificial intelligence.

Henry Kissinger, a diplomatic powerhouse whose roles as a national security adviser and secretary of state under two presidents left an indelible mark on U.S. foreign policy and earned him a controversial Nobel Peace Prize, died on Wednesday at age 100. From a report: Kissinger died at his home in Connecticut, according to a statement from his geopolitical consulting firm, Kissinger Associates. No mention was made of the circumstances. It said he would be interred at a private family service, to be followed at a later date by a public memorial service in New York City. Kissinger had been active past his centenary, attending meetings in the White House, publishing a book on leadership styles, and testifying before a Senate committee about the nuclear threat posed by North Korea. In July 2023 he made a surprise visit to Beijing to meet Chinese President Xi Jinping.

During the 1970s in the midst of the Cold War, he had a hand in many of the epoch-changing global events of the decade while serving as national security adviser and secretary of state under Republican President Richard Nixon. The German-born Jewish refugee's efforts led to the U.S. diplomatic opening with China, landmark U.S.-Soviet arms control talks, expanded ties between Israel and its Arab neighbors, and the Paris Peace Accords with North Vietnam. Kissinger's reign as the prime architect of U.S. foreign policy waned with Nixon's resignation in 1974 amid the Watergate scandal. Still, he continued to be a diplomatic force as secretary of state under Nixon's successor, President Gerald Ford, and to offer strong opinions throughout the rest of his life.

While many hailed Kissinger for his brilliance and broad experience, others branded him a war criminal for his support for anti-communist dictatorships, especially in Latin America. In his latter years, his travels were circumscribed by efforts by other nations to arrest or question him about past U.S. foreign policy. His 1973 Peace Prize - awarded jointly to North Vietnam's Le Duc Tho, who would decline it - was one of the most controversial ever. Two members of the Nobel committee resigned over the selection as questions arose about the secret U.S. bombing of Cambodia. Further reading: Henry Kissinger, War Criminal Beloved by America's Ruling Class, Finally Dies.

The United States and China are pursuing parallel scientific tracks. To solve crises on multiple fronts, the two roads need to become one, Nature's editorial board wrote Wednesday. From the post: It's no secret that research collaborations between China and the United States -- among other Western countries -- are on a downward trajectory. Early indicators of a possible downturn have been confirmed by more sources. A report from Japan's Ministry of Education, Culture, Sports, Science and Technology, published in August, for instance, stated that the number of research articles co-authored by scientists in the two countries had fallen in 2021, the first annual drop since 1993. Meanwhile, data from Nature Index show that China-based scientists' propensity to collaborate internationally has been waning, when looking at the authorship of papers in the Index's natural-science journals.

Nature reported last month that China's decoupling from the countries loosely described as the West mirrors its strengthening of science links with low- and middle-income countries (LMICs), as part of its Belt and Road Initiative. There are many good reasons for China to be boosting science in LMICs, which could sorely do with greater research funding and capacity building. But this is also creating parallel scientific systems -- one centred on North America and Europe, and the other on China. The biggest challenges faced by humanity, from combating climate change to ending poverty, are embodied in a globally agreed set of targets, the United Nations Sustainable Development Goals (SDGs).

Approaching them without shared knowledge can only slow down progress by creating competing systems for advancing and implementing solutions. It's a scenario that the research community must be more aware of and work to avoid. Nature Index offers some reasons as to why collaboration between China and the West is declining. Travel restrictions during the COVID-19 pandemic took their toll, limiting collaborations and barring new ones from being forged. Geopolitical tensions have led many Western governments to restrict their research partnerships with China, on national-security grounds, and vice versa.

An anonymous reader quotes a report from Ars Technica: A prolific espionage hacking group with ties to China spent over two years looting the corporate network of NXP, the Netherlands-based chipmaker whose silicon powers security-sensitive components found in smartphones, smartcards, and electric vehicles, a news outlet has reported. The intrusion, by a group tracked under names including "Chimera" and "G0114," lasted from late 2017 to the beginning of 2020, according to Netherlands national news outlet NRC Handelsblad, which cited "several sources" familiar with the incident. During that time, the threat actors periodically accessed employee mailboxes and network drives in search of chip designs and other NXP intellectual property. The breach wasn't uncovered until Chimera intruders were detected in a separate company network that connected to compromised NXP systems on several occasions. Details of the breach remained a closely guarded secret until now.

NRC cited a report published (and later deleted) by security firm Fox-IT, titled Abusing Cloud Services to Fly Under the Radar. It documented Chimera using cloud services from companies including Microsoft and Dropbox to receive data stolen from the networks of semiconductor makers, including one in Europe that was hit in "early Q4 2017." Some of the intrusions lasted as long as three years before coming to light. NRC said the unidentified victim was NXP. "Once nested on a first computer -- patient zero -- the spies gradually expand their access rights, erase their tracks in between and secretly sneak to the protected parts of the network," NRC reporters wrote in an English translation. "They try to secrete the sensitive data they find there in encrypted archive files via cloud storage services such as Microsoft OneDrive. According to the log files that Fox-IT finds, the hackers come every few weeks to see whether interesting new data can be found at NXP and whether more user accounts and parts of the network can be hacked."

NXP did not alert customers or shareholders to the intrusion, other than a brief reference in a 2019 annual report. It read: "We have, from time to time, experienced cyber-attacks attempting to obtain access to our computer systems and networks. Such incidents, whether or not successful, could result in the misappropriation of our proprietary information and technology, the compromise of personal and confidential information of our employees, customers, or suppliers, or interrupt our business. For instance, in January 2020, we became aware of a compromise of certain of our systems. We are taking steps to identify the malicious activity and are implementing remedial measures to increase the security of our systems and networks to respond to evolving threats and new information. As of the date of this filing, we do not believe that this IT system compromise has resulted in a material adverse effect on our business or any material damage to us. However, the investigation is ongoing, and we are continuing to evaluate the amount and type of data compromised. There can be no assurance that this or any other breach or incident will not have a material impact on our operations and financial results in the future."

Global pay TV penetration (the number of pay TV subscriptions relative to the number of households) is set to decline for the first time ever in 2024 following a peak penetration of 60.3% in Q4 2023. This decline will continue into the forecast period, with a drop of almost 4 percentage points by the end of 2028, according to Ampere's latest forecasts, which cover 96 markets. From a report: This decline in pay TV penetration has been driven primarily by the Americas, and in particular North America which has seen its pay TV penetration almost halve from a high of 84% in 2009 to 45% in 2023. In the case of North America, this drop has been caused by a combination of high costs (currently over $90 per month) and competition from a mature SVoD market which is driving customers increasingly to cut the cord.

However, the recent distribution deal between Disney and Charter in the US, which saw select Disney streaming products bundled into Charter's TV packages, demonstrates that cable operators in the region remain a powerful force as distribution partners, giving streamers the ability to reach a larger and potentially untapped audience base. In addition to North America, Latin America has also shown large declines in pay TV penetration, with a drop of around 10 percentage points since its peak of 42% in 2016. On the contrary, the APAC and Europe have shown the highest penetration growth in recent years, with large gains coming from China, especially after China Mobile acquired an IPTV license in 2018. The growth in these regions has largely come from low-cost IPTV services which are often bundled into broadband packages for a low cost, and helps drive pay TV subscriptions in these areas. In Europe, markets such as Portugal, Serbia and Hungary are expected to see further growth in the forecast period.

Rooting out manipulation should not depend on dedicated amateurs who take personal legal risks for the greater good. From a story on Financial Times: As the Oxford university psychologist Dorothy Bishop has written, we only know about the ones who get caught. In her view, our "relaxed attitude" to the scientific fraud epidemic is a "disaster-in-waiting." The microbiologist Elisabeth Bik, a data sleuth who specialises in spotting suspect images, might argue the disaster is already here: her Patreon-funded work has resulted in over a thousand retractions and almost as many corrections. That work has been mostly done in Bik's spare time, amid hostility and threats of lawsuits. Instead of this ad hoc vigilantism, Bishop argues, there should be a proper police force, with an army of scientists specifically trained, perhaps through a masters degree, to protect research integrity.

It is a fine idea, if publishers and institutions can be persuaded to employ them (Spandidos, a biomedical publisher, has an in-house anti-fraud team). It could help to scupper the rise of the "paper mill," an estimated $1bn industry in which unscrupulous researchers can buy authorship on fake papers destined for peer-reviewed journals. China plays an outsize role in this nefarious practice, set up to feed a globally competitive "publish or perish" culture that rates academics according to how often they are published and cited. Peer reviewers, mostly unpaid, don't always spot the scam. And as the sheer volume of science piles up -- an estimated 3.7mn papers from China alone in 2021 -- the chances of being rumbled dwindle. Some researchers have been caught on social media asking to opportunistically add their names to existing papers, presumably in return for cash.

A modern-day rush prospecting frenzy for lithium, a crucial battery metal, is unfolding across remote Western Australian deserts. The arid outback that previously supplied gold, nickel and iron now hosts fierce competition between miners racing to stake claims on lithium resources needed for the global green energy transition. Lithium giants U.S.'s Albemarle and Chile's SQM have sparred with Australian billionaires Gina Rinehart and Chris Ellison over contested acquisitions of unproven explorers there. With demand surging, the harsh outback has become the modern El Dorado as pioneers and corporations scramble to tap into lithium, the "white gold," before rivals beat them to the punch. The deal frenzy has also come at a time when the lithium price has crashed as much as 70% compared with highs seen last year, as expectations of electric vehicle demand in key markets such as China have been lowered, Financial Times adds. The report adds: Western Australia already supplies about half of the world's raw lithium and is seen as a stable place to invest compared with parts of Africa, where there has been political instability, and Chile, where the state has moved to take control of lithium projects. Local expectations are high. A report by Australia's chief economist said lithium product exports should exceed A$20bn in the year to June 2023, up from A$5bn in the previous year. The report added that by 2028, the value of lithium exports should exceed those of coal, a staple of Australia's economy for decades. Australia has ambitions to step up its efforts to refine spodumene to keep more of the value onshore rather than shipping all of its resources to China, which has a commanding share of the refining process.

AI employed by the U.S. military "has piloted pint-sized surveillance drones in special operations forces' missions and helped Ukraine in its war against Russia," reports the Associated Press.

But that's the beginning. AI also "tracks soldiers' fitness, predicts when Air Force planes need maintenance and helps keep tabs on rivals in space." Now, the Pentagon is intent on fielding multiple thousands of relatively inexpensive, expendable AI-enabled autonomous vehicles by 2026 to keep pace with China. The ambitious initiative — dubbed Replicator — seeks to "galvanize progress in the too-slow shift of U.S. military innovation to leverage platforms that are small, smart, cheap, and many," Deputy Secretary of Defense Kathleen Hicks said in August. While its funding is uncertain and details vague, Replicator is expected to accelerate hard decisions on what AI tech is mature and trustworthy enough to deploy — including on weaponized systems.'

There is little dispute among scientists, industry experts and Pentagon officials that the U.S. will within the next few years have fully autonomous lethal weapons. And though officials insist humans will always be in control, experts say advances in data-processing speed and machine-to-machine communications will inevitably relegate people to supervisory roles. That's especially true if, as expected, lethal weapons are deployed en masse in drone swarms. Many countries are working on them — and neither China, Russia, Iran, India or Pakistan have signed a U.S.-initiated pledge to use military AI responsibly.

Regulators in the European Union, China and France have asked for information on Nvidia's graphic cards, with more requests expected in the future, the U.S. chip giant said in a regulatory filing. From a report: Nvidia is the world's largest maker of chips used both for artificial intelligence and for computer graphics. Demand for its chips jumped following the release of the generative AI application ChatGPT late last year. The California-based company has a market share of around 80% via its chips and other hardware and its powerful software that runs them.

Its graphics cards are high-performance devices that enable powerful graphics rendering and processing for use in video editing, video gaming and other complex computing operations. The company said this has attracted regulatory interest around the world. "For example, the French Competition Authority collected information from us regarding our business and competition in the graphics card and cloud service provider market as part of an ongoing inquiry into competition in those markets," Nvidia said in a regulatory filing dated Nov. 21.

Russia President Vladimir Putin on Friday warned that the West should not be allowed to develop a monopoly in the sphere of AI, and said that a much more ambitious Russian strategy for the development of AI would be approved shortly. From a report: China and the United States are leading the development of AI, which many researchers and global leaders think will transform the world and revolutionise society in a way similar to the introduction of computers in the 20th century. Moscow has ambitions to be an AI power too, but its efforts have been set back due to the war in Ukraine which prompted many talented specialists to leave Russia and triggered Western sanctions that have hindered the country's high-tech imports.

Speaking to an AI conference in Moscow beside Sberbank CEO German Gref, Putin said that trying to ban AI was impossible despite the sometimes troubling ethical and social consequences of new technologies. "You cannot ban something - if we ban it then it will develop somewhere else and we will fall behind," Putin said of AI, though he said ethical questions should be resolved with reference to "traditional" Russian culture. Putin cautioned that some Western online search systems and generative models ignored or even cancelled Russian language and culture. Such Western algorithms, he said, essentially thought Russia did not exist. "Of course, the monopoly and domination of such systems, such alien systems is unacceptable and dangerous," he said.

An anonymous reader shares a report: Earlier this year, the National Supercomputing Center in Wuxi (an entity blacklisted in the U.S.) launched its new supercomputer based on the enhanced China-designed Sunway SW26010 Pro processors with 384 cores. Sunway's SW26010 Pro CPU not only packs more cores than its non-Pro SW26010 predecessor, but it more than quadrupled FP64 compute throughput due to microarchitectural and system architecture improvements, according to Chips and Cheese. However, while the manycore CPU is good on paper, it has several performance bottlenecks.

The first details of the manycore Sunway SW26010 Pro CPU and supercomputers that use it emerged back in 2021. Now, the company has showcased actual processors and disclosed more details about their architecture and design, which represent a significant leap in performance, recently at SC23. The new CPU is expected to enable China to build high-performance supercomputers based entirely on domestically developed processors. Each Sunway SW26010 Pro has a maximum FP64 throughput of 13.8 TFLOPS, which is massive. For comparison, AMD's 96-core EPYC 9654 has a peak FP64 performance of around 5.4 TFLOPS.

The SW26010 Pro is an evolution of the original SW26010, so it maintains the foundational architecture of its predecessor but introduces several key enhancements. The new SW26010 Pro processor is based on an all-new proprietary 64-bit RISC architecture and packs six core groups (CG) and a protocol processing unit (PPU). Each CG integrates 64 2-wide compute processing elements (CPEs) featuring a 512-bit vector engine as well as 256 KB of fast local store (scratchpad cache) for data and 16 KB for instructions; one management processing element (MPE), which is a superscalar out-of-order core with a vector engine, 32 KB/32 KB L1 instruction/data cache, 256 KB L2 cache; and a 128-bit DDR4-3200 memory interface.

Chinese health authorities have provided the requested data on an increase in respiratory illnesses and reported clusters of pneumonia in children, and have not detected any unusual or novel pathogens, the World Health Organization (WHO) said. From a report: The WHO had asked China for more information on Wednesday after groups including the Program for Monitoring Emerging Diseases reported clusters of undiagnosed pneumonia in children in north China. As per the rule, China responded to the WHO within 24 hours. The WHO had sought epidemiologic and clinical information as well as laboratory results through the International Health Regulations mechanism.

Epidemiologists have warned that as, China heads into its first winter since the lifting of zero-Covid restrictions, natural levels of immunity to respiratory viruses may be lower than normal, leading to an increase in infections. Several countries, including the US and the UK, experienced large waves of respiratory viral infections in the first winter after Covid restrictions were lifted as people had lower natural levels of immunity. For young children, lockdowns delayed the age at which they were first exposed to common bugs.

Nvidia has told customers in China it is delaying the launch of a new AI chip it designed to comply with U.S. export rules until the first quarter of next year, Reuters reported Friday, citing sources familiar with the matter. From the report: The delayed chip is the H20, the most powerful of three China-focused chips Nvidia has developed to comply with fresh U.S. export restrictions, the sources said, and could complicate its efforts to preserve market share in China against local rivals like Huawei. The California-based AI chip giant had been expected to launch the new products as early as Nov. 16, chip industry newsletter SemiAnalysis reported this month.

However, the H20 launch has now been pushed back until the first quarter of next year, the sources said, with one saying they were advised it could take place in February or March. The sources said they were told that the H20 was being delayed due to issues server manufacturers were having in integrating the chip.

Nvidia's fiscal third-quarter results surpassed Wall Street's predictions, with revenue growing 206% year over year. However, Nvidia shares are down after the company called for a negative impact in the next quarter due to export restrictions affecting sales in China and other countries. CNBC reports: Nvidia's revenue grew 206% year over year during the quarter ending Oct. 29, according to a statement. Net income, at $9.24 billion, or $3.71 per share, was up from $680 million, or 27 cents per share, in the same quarter a year ago. The company's data center revenue totaled $14.51 billion, up 279% and more than the StreetAccount consensus of $12.97 billion. Half of the data center revenue came from cloud infrastructure providers such as Amazon, and the other from consumer internet entities and large companies, Nvidia said. Healthy uptake came from clouds that specialize in renting out GPUs to clients, Kress said on the call.

The gaming segment contributed $2.86 billion, up 81% and higher than the $2.68 billion StreetAccount consensus. With respect to guidance, Nvidia called for $20 billion in revenue for the fiscal fourth quarter. That implies nearly 231% revenue growth. [...] Nvidia faces obstacles, including competition from AMD and lower revenue because of export restrictions that can limit sales of its GPUs in China. But ahead of Tuesday report, some analysts were nevertheless optimistic.

Misplaced concern about existential risk is impeding the opportunity to expand human potential, writes venture capitalist Vinod Khosla. From his op-ed: I was the first venture investor in OpenAI. The weekend drama illustrated my contention that the wrong boards can damage companies. Fancy titles like "Director of Strategy at Georgetown's Center for Security and Emerging Technology" can lead to a false sense of understanding of the complex process of entrepreneurial innovation. OpenAI's board members' religion of "effective altruism" and its misapplication could have set back the world's path to the tremendous benefits of artificial intelligence. Imagine free doctors for everyone and near free tutors for every child on the planet. That's what's at stake with the promise of AI.

The best companies are those whose visions are led and executed by their founding entrepreneurs, the people who put everything on the line to challenge the status quo -- founders like Sam Altman -- who face risk head on, and who are focused -- so totally -- on making the world a better place. Things can go wrong, and abuse happens, but the benefits of good founders far outweigh the risks of bad ones. [...] Large, world-changing vision is axiomatically risky. It can even be scary. But it is the sole lever by which the human condition has improved throughout history. And we could destroy that potential with academic talk of nonsensical existential risk in my view.

There is a lot of benefit on the upside, with a minuscule chance of existential risk. In that regard, it is more similar to what the steam engine and internal combustion engine did to human muscle power. Before the engines, we had passive devices -- levers and pulleys. We ate food for energy and expended it for function. Now we could feed these engines oil, steam and coal, reducing human exertion and increasing output to improve the human condition. AI is the intellectual analog of these engines. Its multiplicative power on expertise and knowledge means we can supersede the current confines of human brain capacity, bringing great upside for the human race.

I understand that AI is not without its risks. But humanity faces many small risks. They range from vanishingly small like sentient AI destroying the world or an asteroid hitting the earth, to medium risks like global biowarfare from our adversaries, to large and looming risks like a technologically superior China, cyberwars and persuasive AI manipulating users in a democracy, likely starting with the U.S.'s 2024 elections.

The world is on track for a "hellish" 3C of global heating, the UN has warned before the crucial Cop28 climate summit that begins next week in the United Arab Emirates. From a report: The report found that today's carbon-cutting policies are so inadequate that 3C of heating would be reached this century. Temperature records have already been obliterated in 2023 and intensifying heatwaves, floods and droughts have taken lives and hit livelihoods across the globe, in response to a temperature rise of 1.4C to date. Scientists say far worse is to come if temperatures continue to rise. The secretary general of the UN, Antonio Guterres, has said repeatedly the world is heading for a "hellish" future.

The UN Environment Programme (Unep) report said that implementing future policies already promised by countries would shave 0.1C off the 3C limit. Putting in place emissions cuts pledged by developing countries on condition of receiving financial and technical support would cut the temperature rise to 2.5C, still a catastrophic scenario. To get on track for the internationally agreed target of 1.5C, 22bn tonnes of CO2 must be cut from the currently projected total in 2030, the report said. That is 42% of global emissions and equivalent to the output of the world's five worst polluters: China, US, India, Russia and Japan.