"Polar oceans constitute emission hotspots during the summer," according to a new paper published in the peer-reviewed scientific journal Science Advances. "And including those sea-to-air fluxes in an atmospheric chemistry-climate model "results in a net radiative effect that has far-reaching implications."

The research was led by a team of scientists from Spain's Institute of Marine Sciences and the Blas Cabrera Institute of Physical Chemistry, according to an announcement from the UK's University of East Anglia: Researchers have quantified for the first time the global emissions of a sulfur gas produced by marine life, revealing it cools the climate more than previously thought, especially over the Southern Ocean. The study, published in the journal Science Advances, shows that the oceans not only capture and redistribute the sun's heat, but produce gases that make particles with immediate climatic effects, for example through the brightening of clouds that reflect this heat.

It broadens the climatic impact of marine sulfur because it adds a new compound, methanethiol, that had previously gone unnoticed. Researchers only detected the gas recently, because it used to be notoriously hard to measure and earlier work focussed on warmer oceans, whereas the polar oceans are the emission hotspots...

Their findings represent a major advance on one of the most groundbreaking theories proposed 40 years ago about the role of the ocean in regulating the Earth's climate. This suggested that microscopic plankton living on the surface of the seas produce sulfur in the form of a gas, dimethyl sulphide, that once in the atmosphere, oxidizes and forms small particles called aerosols. Aerosols reflect part of the solar radiation back into space and therefore reduce the heat retained by the Earth. Their cooling effect is magnified when they become involved in making clouds, with an effect opposite to, but of the same magnitude as, that of the well-known warming greenhouse gases, such as carbon dioxide or methane. The researchers argue that this new work improves our understanding of how the climate of the planet is regulated by adding a previously overlooked component and illustrates the crucial importance of sulfur aerosols. They also highlight the magnitude of the impact of human activity on the climate and that the planet will continue to warm if no action is taken.
The article includes this quote from one of the study's lead authors (Dr. Charel Wohl from the university's Centre for Ocean and Atmospheric Sciences). "Climate models have greatly overestimated the solar radiation actually reaching the Southern Ocean, largely because they are not capable of correctly simulating clouds. The work done here partially closes the longstanding knowledge gap between models and observations."

And the university's announcement argues that "With this discovery, scientists can now represent the climate more accurately in models that are used to make predictions of +1.5 degrees C or +2 degrees C warming, a huge contribution to policy making."

Thanks to long-time Slashdot reader schwit1 for sharing the news.

Transport for London (TfL) has dropped its investigation into how it could introduce driverless trains on the London Underground. From a report: One of the many conditions imposed on TfL during the pandemic to keep services running when most of us were stuck at home was that it would investigate how it could introduce driverless trains on the Underground. TfL was required to produce a business case for converting the Waterloo & City line and Piccadilly line to a DLR-style operation, and in September 2021, it advertised for consultancy work on the project.

It's now been confirmed that the study reached the same conclusion that every other study into the issue has already reported -- it'll cost an awful lot of money for very little benefit. Despite the claims that it would prevent strikes on the tube, the reality is that it wouldn't, as driverless trains would still have staff on board, just as the DLR does, and the DLR still has strikes.

British members of parliament have voted to legalize assisted dying, approving a contentious proposal that would make the United Kingdom one of a small handful of nations to allow terminally ill people to end their lives. From a report: Lawmakers in the House of Commons voted by 330 to 275 to support the bill, after an hours-long debate in the chamber and a years-long campaign by high-profile figures that drew on emotional first-hand testimony.

Britain is now set to join a small club of nations to have legalized the process, and one of the largest by population to allow it. The bill must still clear the House of Lords and parliamentary committees, but Friday's vote marked the most important hurdle.

It allows people with a terminal condition and less than six months to live to take a substance to end their lives, as long as they are capable of making the decision themselves. Two doctors, and then a High Court judge, would need to sign off on the choice. Canada, New Zealand, Spain and most of Australia allow assisted dying in some form, as do several US states including Oregon, Washington and California.

The ongoing cybersecurity incident affecting a North West England NHS group has forced sites to fall back on pen-and-paper operations. From a report: The Wirral University Teaching Hospital NHS Trust updated its official line on the incident on Wednesday evening, revealing new details about the case, but remains coy about the true nature of the attack.

"After detecting suspicious activity, as a precaution, we isolated our systems to ensure that the problem did not spread. This resulted in some IT systems being offline," the updated statement said.

"We have reverted to our business continuity processes and are using paper rather than digital in the areas affected. We are working closely with the national cybersecurity services and we are planning to return to normal services at the earliest opportunity."

British Prime Minister Keir Starmer inaugurated London's first Google-funded AI Campus in Camden, aiming to equip young people with AI and machine learning skills. Reuters reports: The center, based in Camden, an area which Starmer represents in parliament and which is also home to Google's future offices in Kings Cross, has already started a two-year pilot project for local students. An first cohort of 32 people aged 16-18 will have access to resources in AI and machine learning and receive mentoring and expertise from Google's AI company DeepMind, the tech giant said. The students will tackle real-world projects connecting AI to fields such as health, social sciences and the arts at the campus, which has been established in partnership with the local authority, Google said.

Google's UK and Ireland managing director Debbie Weinstein announced 865,000 pounds ($1.10 million) of funding for an AI literacy program across the UK. The money will be used by charities Raspberry Pi Foundation and Parent Zone to help train teachers with an aim of reaching over 250,000 students by the end of 2026, she said.

Blue Yonder, a Panasonic subsidiary specializing in AI-driven supply chain solutions, experienced a recent ransomware attack that impacted many of its customers. "Among its 3,000 customers are high-profile organizations like DHL, Renault, Bayer, Morrisons, Nestle, 3M, Tesco, Starbucks, Ace Hardware, Procter & Gamble, Sainsbury, and 7-Eleven," reports BleepingComputer. From the report: On Friday, the company warned that it was experiencing disruptions to its managed services hosting environment due to a ransomware incident that occurred the day before, on November 21. "On November 21, 2024, Blue Yonder experienced disruptions to its managed services hosted environment, which was determined to be the result of a ransomware incident," reads the announcement. "Since learning of the incident, the Blue Yonder team has been working diligently together with external cybersecurity firms to make progress in their recovery process. We have implemented several defensive and forensic protocols."

Blue Yonder claims it has detected no suspicious activity in its public cloud environment and is still processing multiple recovery strategies. [...] As expected, this has impacted clients directly, as a spokesperson for UK grocery store chain Morrisons has confirmed to the media they have reverted to a slower backup process. Sainsbury told CNN that it had contingency plans in place to overcome the disruption. A Saturday update informed customers that the restoration of the impacted services continued, but no specific timelines for complete restoration could be shared yet. Another update published on Sunday reiterated the same, urging clients to monitor the customer update page on Blue Yonder's website over the coming days.

Slashdot reader Bruce66423 shared this report from the Guardian: Staff have resigned at Starling Bank after its new chief executive demanded thousands of workers attend its offices more frequently, despite lacking enough space to host them.

In his first major policy change since taking over from the UK digital bank's founder, Anne Boden, in March, Raman Bhatia has ordered all hybrid staff — many of whom were in the office only one or two days a week, or on an ad-hoc basis — to travel to work for a minimum of 10 days each month. But the bank, which operates online only, admitted that some of its offices would not be equipped to handle the influx... "We are considering ways in which we can create more space," an email sent by Starling's human resources team and seen by the Guardian said.

Starling has 3,231 staff, the vast majority of whom are in the UK with some also in Dublin. However, the Guardian understands that the bank has only about 900 desks, including 260 at its Cardiff site, 320 in its London headquarters and 155 in Southampton. The bank has a further 160 desks in its newest site in Manchester, where it has signed a 10-year lease to occupy the fifth floor of the Landmark building, which also houses Santander UK and HSBC staff... Some staff have already resigned over the "rushed" announcement, while others have threatened to do so...

The return to office announcement came a month after the Financial Conduct Authority hit Starling with a £29m fine after discovering "shockingly lax" controls that it said left the financial system "wide open to criminals". That included failures in its automated screening system for individuals facing government sanctions.
Starling Bank issued this statement to explain its reasoning. "By bringing colleagues together in person, our aim is to achieve greater collaboration that will benefit our customers as we enter Starling's next phase of growth."

The article also notes that the U.K. supermarket chain Asda "has also toughened its stance, making it compulsory for thousands of workers at its offices in Leeds and Leicester to spend at least three days a week at their desks from the new year."

An anonymous reader quotes a report from VICE: It's early on a Sunday morning in late 1994, and you're shuffling your way through Fitzrovia in Central London, bloodstream still rushing after a long night at Bagley's. The sun comes up as you come down. You navigate side streets that you know like the back of your hand. But your hand's stamped with a party logo. And your brain's kaput. Coffee... yes, coffee. Good idea. Suddenly, you find yourself outside a teal blue cafe. Walking in is like entering an alien world; rows of club kids, tech heads, and game developers sit in front of desktops, lost in the primitive version of some new reality. Tentacular cables hang from the ceiling. Ambient techno reverberates from wall to wall. Cigarette smoke fills the air.

Welcome to Cyberia, the world's first internet cafe. Which, if you're too young to remember, are basically cafes with computers in them. It all began when Eva Pascoe, a Polish computing student living in London, crossed paths with Tim Berners Lee and other early internet mavericks at the dawn of the 90s. "I was very interested in cyberfeminism and wanted to figure out how women could reclaim tech," she recalls. The internet was still in its infancy. Diabolically slow dial-up modems only emerged around 1992; the World Wide Web was a pipe dream until 1993 and hardly anyone had the internet at home. But there wasn't just a lack of javascript; Eva remembers there being no good java, either. "There were no coffee shops in London," she says, which today seems ludicrous. "Just greasy spoons and everyone drank tea. I wanted a European-style cafe."

Linking up with like-minded pioneers David Rowe and husband and wife Keith and Gene Teare, Eva found a spot on the corner of Whitfield Street and launched Cyberia there in 1994. With Hackers-style aesthetics and futuristic furniture, it was based around a U-shaped layout that meant visitors could see each other's screens. "I wanted women to feel safe, because a lot of the stuff on the net was dodgy," she explains. Many of Eva's mates chipped in to help out -- architects, interior designers, graphic artists, publishers, and ravers among them.

And then there was the Amish community in Pennsylvania. Eva had to fly out there to negotiate for the "Cyberia.com" domain name they had bought. "It was a proper barn with horse carts and a wall of modems as they were running a bulletin board and an early ecommerce company. Apparently, there was always one family nominated to be the tech support," she remembers. Back in London, Cyberia quickly became a hotspot. "Virtually the second we opened, we had three lines deep around the block," she says. It's hard to imagine, but nowhere else in the world was doing what they were doing. It was the world's first cybercafe. "If you wanted to collect your emails, we were the only place in town," Eva says. Cyberia opened around 20 cafes worldwide, including branches in Bangkok, Paris, and Rotterdam. "For a fleeting moment it became like a sexier version of Richard Branson's Virgin empire: there was Cyberia Records, Cyberia Channel (a pioneering streaming service), Cyberia Payments, the Cyberia magazine, a Cyberia show on UK TV -- even a Cyberia wedding," writes VICE's Kyle MacNeill. He attended Cyberia's 30th birthday party in September and spoke with some of the cafe's original innovators, "shooting the shit about the good times and the not-so-good coffee."

Apple's restrictions on mobile browsers are limiting innovation and holding back new features that could benefit iPhone users, according to provisional findings published today by the UK's Competition and Markets Authority (CMA). From a report: In its report, the CMA's independent inquiry group determined that Apple's Safari browser policies prevent competing browsers from implementing certain features, such as faster webpage loading technologies. The investigation also revealed that many UK app developers would prefer to offer progressive web apps as an alternative to App Store distribution, but Apple's current iOS limitations make this impractical.

Adding to competitive concerns, the regulator highlighted a revenue-sharing agreement between Apple and Google that "significantly reduces their financial incentives to compete" in the mobile browser space on iOS. The CMA also found that both companies can manipulate how users are presented with browser choices, making their own offerings appear as the clearest or easiest options.

While master's degrees are increasingly popular -- with 40% of U.S. bachelor's degree holders now having postgraduate credentials -- new research reveals many don't deliver improved earnings despite soaring costs.

Analysis from the U.S. and UK indicates that about 40% of U.S. master's programs fail to provide positive financial returns, with some even leading to financial losses for graduates, as captured in a new Economist story. Similarly, British master's graduates earn no more than bachelor's holders by age 35 after accounting for background factors. This is particularly significant because U.S. students now average $50,000 in postgraduate debt, triple the real cost since 2000, while UK fees have risen 70% since 2011 to $12,000 annually.

Returns vary dramatically by field: computer science and engineering show strong gains, while humanities degrees often lead to reduced earnings compared to bachelor's-only peers. Women are more likely than men to see earnings increases, succeeding in 14 out of 31 subject areas compared to men's six. Choice of institution impacts outcomes, though data shows no strong correlation between program cost and graduate earnings.

An anonymous reader shares a report: The global gaming phenomenon Minecraft is coming to the real world for the first time in a global deal to open themed rides, attractions, hotel rooms and retail outlets, starting with the UK and US. Minecraft has struck a deal with UK-headquartered Merlin Entertainments -- Europe's largest theme park operator and the second biggest globally after Disney -- which runs more than 135 attractions in 23 countries including Alton Towers, Legoland, Sea Life, Madame Tussauds and the London Eye.

Under the terms of the deal, Merlin will invest more than $110 million in the first two attractions. They are due to open in the UK and the US in 2026 and 2027, in either an existing theme park or as new city centre attractions. Over the longer term the two companies plan to expand the strategic partnership, which is called "Adventures Made Real," to other countries and territories. Minecraft is the bestselling video game of all time, with 140 million players each month, in territories as disparate as Antarctica and Vatican City, and there are more than 1.3 trillion videos posted by game players on YouTube.

An anonymous reader shares a report: Earlier this year I had one of those encounters which, afterwards, I just couldn't stop thinking about. Eight months and some digging later, I have decided to write about it. My meeting was with an American businessman called Tom Kearney, who was on a pavement in central London one Christmas when he was whacked on the head so hard that he fell to the ground, spent weeks in a coma, and only just survived. Had he been mugged? Not quite. He'd been hit by the giant wing mirror of a London bus.

[...] The most recent data show that 86 people died or were badly injured in bus collisions in London between 10 December 2023 and 31 March 2024. Kearney's analysis of TfL data suggests that around three people a day are hospitalised after bus safety incidents. That doesn't feel good, even though it's tiny in comparison to the 1.8bn annual passenger journeys. Compared with other world cities like New York and Paris the capital's buses rank in the top quartile for financial efficiency but the bottom quartile for collisions per kilometre. And the number of collisions in London has increased in the past couple of years, despite buses travelling fewer miles.

Could this have anything to do with the way that bus contracts prioritise speed? Last week, hundreds of bus drivers marched to TfL headquarters to demand better working conditions and the right to report safety concerns "without fear of retribution from TfL or employers." Drivers described the pressure of long shifts, few breaks and having to drive in sometimes blistering heat, all while being shouted at over a monitor by controllers who want them to make up the time to the next stop, and keep the right amount of distance between their bus and next. It's not surprising that a third of bus drivers, before the pandemic, reported having had a "close call" from fatigue.

With the government about to export the London franchise model to other parts of the country, someone in Whitehall needs to take a look. Michael Liebreich, a former McKinsey consultant who sat on the TfL board for six years, believes that TfL's contracting out model is "institutionally unsafe." Bus drivers are under such pressure, he thinks, that some may break the speed limit and overtake cyclists dangerously.

Slashdot unixbhaskar writes: Linus has released a fresh Linux kernel for public consumption. Please give it a try and report any glitches to the maintainers for improvement. Also, please do not forget to express your appreciation to those tireless folks who did all the hard work for you.
The blog OMG Ubuntu calls it "one of the most biggest kernel releases for a while," joking that it's a "really real-time kernel." The headline feature in Linux 6.12 is mainline support for PREEMPT_RT. This patch set dramatically improves the performance of real-time applications by making kernel processes pre-emptible — effectively enabled proper real-time computing... Meanwhile, Linus Torvalds himself contributes a new method for user-space address masking designed to claw back some of the performance lost due to Spectre-v1 mitigations.

You might have heard that kernel devs have been working to add QR error codes to Linux's kernel panic BSOD screen (as a waterfall of error text is often cut off and not easily copied for ad-hoc debugging). Well, Linux 6.12 adds support for those during Direct Rendering Manager panics...

A slew of new RISC-V CPU ISA extensions are supported in Linux 6.12; hybrid CPU scaling in the Intel P-State driver lands ahead of upcoming Intel Core Ultra 2000 chips; and AMD P-State driver improves AMD Boost and AMD Preferred Core features.
More coverage from the blog 9to5Linux highlights a new scheduler called sched_ext, Clang support (including LTO) for nolibc, support for NVIDIA's virtual command queue implementation for SMMUv3, and "an updated cpuidle tool that now displays the residency value of cpuidle states for a clearer and more detailed view of idle state information when using cpuidle-info." Linux kernel 6.12 also introduces SWIG bindings for libcpupower to make it easier for developers to write scripts that use and extend the functionality of libcpupower, support for translating normalized error addresses reported by an AMD memory controller into system physical addresses using a UEFI mechanism called platform runtime mechanism (PRM), as well as simplified loading of microcode patches on AMD Zen and newer CPUs by using the family, model, and stepping encoded in the patch revision number...

Moreover, Linux 6.12 adds support for running as a protected guest on Android as well as perf and support for a bunch of new interconnect PMUs. It also adds the final conversions to the new Intel VFM CPU model matching macros, rewrites the PCM buffer allocation handling and locking optimizations, and improves the USB audio driver...

Chances of intelligent life emerging in our Universe "and in any hypothetical ones beyond it" can be estimated by a new theoretical model, reports the Royal Astronomical Society.

Since stars are a precondition for the emergence of life, the new research predicts that a typical observer [i.e., intelligent life] should experience a substantially larger density of dark energy than is seen in our own Universe... The approach presented in the paper involves calculating the fraction of ordinary matter converted into stars over the entire history of the Universe, for different dark energy densities. The model predicts this fraction would be approximately 27% in a universe that is most efficient at forming stars, compared to 23% in our own Universe. Dark energy makes the Universe expand faster, balancing gravity's pull and creating a universe where both expansion and structure formation are possible. However, for life to develop, there would need to be regions where matter can clump together to form stars and planets, and it would need to remain stable for billions of years to allow life to evolve.

Crucially, the research suggests that the astrophysics of star formation and the evolution of the large-scale structure of the Universe combine in a subtle way to determine the optimal value of the dark energy density needed for the generation of intelligent life. Professor Lucas Lombriser, Université de Genève and co-author of the study, added: "It will be exciting to employ the model to explore the emergence of life across different universes and see whether some fundamental questions we ask ourselves about our own Universe must be reinterpreted."
The study was funded by the EU's European Research Council, and published in Monthly Notices of the Royal Astronomical Society.

Thanks to long-time Slashdot reader schwit1 for sharing the news.

Economist: Britain has long been a pioneer in telecoms. In 1837 it built the world's first commercial telegraph; the first transatlantic call was placed from London in 1927; in 1992 a British programmer sent the first text message to a mobile phone. Today it lags rather than leads. According to figures provided to The Economist by Opensignal, a research firm, Britain ranks 46th for download speeds out of the 56 developed and developing countries for which there are data. That gives it the worst mobile service in the rich world.

Some of this is due to demand. Over the past three years data usage on mobile devices has doubled as people stream films and play games. The busiest parts of cities often lack mobile reception because the system is at capacity. But mainly it is an issue of supply. British users of 5G are only on it 11% of the time. That puts Britain 43rd out of the 56 countries. This lacklustre performance is caused by a combination of government U-turns, insufficient investment and sclerotic planning.

An anonymous reader quotes a report from Bloomberg: The Australian government plans to enact laws requiring big tech firms to protect its citizens online, the latest move by the center-left Labor administration to crack down on social media including through age limits and curbs on misinformation. Communications Minister Michelle Rowland announced the government's plan for a legislated Digital Duty of Care in Australia on Wednesday night, saying it aligned with similar laws in the UK and European Union. "It is now time for industry to show leadership, and for social media to recognize it has a social responsibility," Rowland said in a speech in Sydney announcing the measures. It would "keep users safe and help prevent online harms."

In response to the laws, Facebook and Instagram operator Meta Platforms Inc. called for the restrictions to be handled by app stores, such as those run by Google and Apple Inc., rather than the platforms themselves. The government has ignored those requests, but has yet to announce what fines companies would face or what age verification information will need to be provided. At the same time, Albanese has moved forward controversial laws to target misinformation and disinformation online, which opponents have labeled an attack on freedom of speech. Earlier this month, Albanese said the government would legislate for a ban on social media for children under 16, a policy the government says is world-leading. "Social media is doing harm to our kids and I'm calling time on it," Albanese told a news conference.

An anonymous reader quotes a report from TechCrunch: U.K. consumer rights group 'Which?' is filing a legal claim against Apple under competition law on behalf of some 40 million users of iCloud, its cloud storage service. The collective proceeding lawsuit, which is seeking 3 billion pounds in compensation damages (around $3.8 billion at current exchange rates), alleges that Apple has broken competition rules by giving its own cloud storage service preferential treatment and effectively locking people into paying for iCloud at "rip-off" prices. "iOS has a monopoly and is in control of Apple's operating systems and it is incumbent on Apple not to use that dominance to gain an unfair advantage in related markets, like the cloud storage market. But that is exactly what has happened," Which wrote in a press release announcing filing the claim with the U.K.'s Competition Appeal Tribunal (CAT).

The lawsuit accuses Apple of encouraging users of its devices to sign up to iCloud for photo storage and other data storage needs, while simultaneously making it difficult for consumers to use alternative storage providers -- including by not allowing them to store or back-up all of their phone's data with a third-party provider. "iOS users then have to pay for the service once photos, notes, messages and other data go over the free 5GB limit," Which noted. The suit also accuses Apple of overcharging U.K. consumers for iCloud subscriptions owing to the lack of competition. "Apple raised the price of iCloud for UK consumers by between 20% and 29% across its storage tiers in 2023," it wrote, saying it's seeking damages for all affected Apple customers -- and estimating that individual consumers could be owed an average of 70 pounds (around $90), depending on how long they've been paying Apple for iCloud services. "Anyone who has 'obtained' iCloud services, including non-paying users, over the nine-year timeframe since the Consumer Rights Act came into force on October 1st, 2015," will be included in the claim. U.K.-based consumers will have to opt-out if they do not want to be included. "Consumers who live outside the U.K. and believe they are eligible to be included must actively opt-in to join the action," adds TechCrunch.

A new study reveals that late work is judged more negatively than on-time submissions, even if delays are minimal or pre-communicated. "The findings suggest that, while you might be tempted to take the maximum allotted time to put the finishing touches to a report, submission or piece of work, the extra effort might not be appreciated by colleagues if it comes at the expense of punctual delivery," reports The Guardian. From the report: The study surveyed thousands of people in the US and UK, including managers, executives, human resources personnel and others whose jobs included an element of evaluating others. Participants were asked to rate pieces of work, such as advertising flyers, art, business proposals, product pitches, photography and news articles. But first, they were told it was either submitted early, on deadline or late. "Late" work was consistently rated as worse in quality than when people were told the same work was completed early or on time. The difference was equivalent to including an objective shortcoming such as not meeting a word count.

A missed deadline led evaluators to believe an employee had less integrity, and they reported they would be less willing to work with or assign tasks to that person in the future. "Everyone saw the exact same art contest entry, school submission or business proposal, but they couldn't help but use their knowledge of when it came in to guide their evaluation of how good it was," said Maglio, who co-authored the study with David Fang of Stanford University.

Those who eagerly submit work early should be advised that this does not appear to earn a boost in opinion, according to the report in the journal Organizational Behavior and Human Decision Processes. It also didn't matter how late the work was submitted, with one day or one week delays viewed just as negatively -- and that remained the case if the employee gave their manager advance warning. The latest study suggests that it is this inability to plan realistically that is frowned on, with factors beyond an employee's control, such as jury duty, not viewed as negatively. "If the reason why you missed the deadline was beyond your control, you as the employee should let your manager know," said Maglio. "That seems to be one of the few instances in which people cut you a break."

AmiMoJo writes: The climate-damaging vapors left behind by jet planes could be easily tackled, aviation experts say, with a new study suggesting they could be eliminated for a few pounds per flight. Jet condensation trails, or contrails, have spawned wild conspiracy theories alleging mind control and the spreading of disease, but scientists say the real problem is their warming effect.

"They create an artificial layer of clouds, which traps the heat from the Earth that's trying to escape to outer space," said Carlos Lopez de la Osa, from the Transport & Environment campaign group, which has carried out a new study on the solutions to contrails. "The scale of the warming that's associated with them is roughly having a similar impact to that of aviation carbon emissions."

Tweaking the flight paths of a handful of aircraft could reduce contrail warming by more than half by 2040, at a cost of less than $5.1 per flight. Geography and a flight's latitude have a strong influence on whether a contrail is warming. Time of day also influences the climate effects of contrails. Those formed by evening and night flights have the largest warming contribution. Seasonality is also important -- the most warming contrails tend to occur in winter. "Planes are already flying around thunderstorms and turbulence areas," Mr Lopez de la Osa said. "We will need to add one more constraint to flight planning, which is avoiding areas of contrail formation."

Apple was notified by the European Union that its geo-blocking practices are potentially in breach of consumer protection rules, adding to the iPhone maker's regulatory issues in the bloc. From a report: Apple's App Store, iTunes Store and other media services unlawfully discriminate against European customers based on their place of residence, according to a European Commission statement on Tuesday.

The notification comes as Apple is facing the first-ever fine under the Digital Markets Act, or DMA, for failing to allow app developers to steer users to cheaper deals, Bloomberg News reported last week. That penalty is set to come months after the Cupertino, California-based company was hit with a $1.9 billion fine for similar abuses under the bloc's traditional competition rules.

The geo-locating investigation was conducted together with a network of national consumer authorities and found Apple media services only allow users to use payment cards issued in the countries they registered their Apple accounts, according to the statement. The App Store also blocks users from downloading apps offered in other countries, the investigation found.