The world’s biggest iceberg is drifting away from the Antarctic after having been grounded there for more than 30 years. The iceberg, which has the catchy name A23a, split from the Antarctic’s giant Filchner Ice Shelf in 1986, but has been stuck to the ocean floor since shortly after that time. Now, according to the British Antarctic Survey, it is on the move. Satellite images show the iceberg drifting past the northern tip of the Antarctic Peninsula. A23a is truly massive. It weighs nearly a trillion metric tonnes and is about three times the size of New York City. It is more than twice the size of Greater London. Scientists say the massive chunk of ice is drifting at a rate of three miles each day. “Over time, it’s probably just thinned slightly and got that little bit of extra buoyancy that’s allowed it to lift off the ocean floor and get pushed by ocean currents,” said Oliver Marsh, a glaciologist at the British Antarctic Survey. Andrew Fleming, a remote sensing expert from the British Antarctic Survey, told the BBC the iceberg had been drifting for the last year, but now appeared to be picking up speed. “I asked a couple of colleagues about this, wondering if there was any possible change in shelf water temperatures that might have provoked it, but the consensus is the time had just come,” he said. Still, some scientists are concerned about how the movement could affect wildlife. The iceberg could end up at the island of South Georgia, which is about 1,000 miles east of the southern tip of South America, which is home to seals, penguins and other seabirds. Chad Greene, a glaciologist at NASA’s Jet Propulsion Laboratory, told the New Scientist large icebergs tend to break off from Antarctica around once per decade. They then get stuck in the Antarctic’s nearly freezing waters, which staves off the melting process, but only for a while. “Icebergs this big can hang around for decades in one place, then one day decide to go for a jolly,” Greene said. “That’s when things get interesting.” How to join the indy100's free WhatsApp channel Sign up to our free indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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Researchers have invented a new battery that they claim could have profound implications for the future of energy storage and renewable technologies. The lithium-based redox-flow battery, developed by a team at the University of Cincinnati, could prove crucial for wind and solar operations, where large-scale batteries are needed to store energy during times of overproduction and release it when production drops off. “Energy generation and energy consumption is always mismatched,” said Jimmy Jiang, who led the research at the University of Cincinnati. “That’s why it’s important to have a device that can store that energy temporarily and release it when it’s needed.” The novel design removes the membrane that separates the positive and negative sides of the battery, which is one of the most expensive parts of this type of battery and has previously hindered development. The membrane-free battery exhibited high voltage and energy density that could potentially meet the demands of large-scale green energy operations at an economically viable cost for the first time. “This design significantly decreases material costs,” said Soumalya Sinha, a visiting professor at the University of Cincinnati who was involved in the research. “We’re trying to achieve the same performance at a cheaper cost.” The team has submitted patent applications for the design, which Dr Jiang said will herald a “battery revolution” within the next 20 years. “I am confident about that,” he said. “There is a lot of intense research going into pushing the boundaries of battery performance.” The research was detailed in a paper, titled ‘Development of high-voltage and high-energy membrane-free nonaqueous lithium-based organic redox flow batteries’, published in the journal Nature Communications. Read More Volcano discovery could power electric cars for decades, scientists say

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ChatGPT is offline in a “major outage”. Anyone attempting to use the artificial intelligence system saw a warning that it was “at capacity right now”. The error page also includes a ChatGPT-written rap about the status of ChatGPT, which begins with the phrase “Yeah, yo, what’s up ChatGPT fam”. But on its status page, creators OpenAI said it was suffering a “major outage” that was being investigated urgently and had lasted for more than an hour. The latest update on that page indicated that engineers had “identified an issue” with the system and was working to fix it. The problems also affected OpenAI’s API service, which allows third-party services to connect to its AI systems. Both went down at the same time. It is the first major outage on the system for months. While it has seen some problems in recent weeks, they have been partial outages that have slowed or otherwise interfered with ChatGPT’s performance, rather than going fully offline. One of those difficulties came last night, when OpenAI said that both ChatGPT and its API had been suffering from a partial outage. The problems comes days after OpenAI held its first developer conference, on Monday, though there is no indication the two events are connected. At that conference, it announced a range of new features including a new tool it calls “GPTs”, which let people easily create their own custom versions of ChatGPT. During that same event, OpenAI announced that one hundred million people use ChatGPT each week. Some two million developers are also working on the platform, its chief executive Sam Altman said. ChatGPT became the fastest-growing app in history when it launched last November, as well as igniting worldwide excitement and panic over artificial intelligence. It saw 100 million users join in two months, a dramatic record that was later beaten by Meta’s Instagram Threads. Read More ChatGPT update allows anyone to make their own personalised AI assistant How Elon Musk’s ‘spicy’ Grok compares to ‘woke’ ChatGPT ChatGPT and other chatbots respond to emotions, report says

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