Silicon Valley venture capitalists are racing to get into artificial intelligence companies — including investors who once bet

Elon Musk has posted a series of explicit tweets about Mark Zuckerberg, including This week, Mr Musk tweeted that “Zuck is a cuck”, and followed it up with a post in which he proposed a “literal dick measuring contest”, alongside a ruler emoji. On Monday, he then responded to a post in which another user speculated that Mr Musk would lose such a contest. “This would so inappropriate & lacking in dignity … let’s do it!!!” Mr Musk wrote in a reply. It is just the latest in Mr Musk’s often intense responses to the launch of Threads, a Twitter competitor launched by Mr Zuckerberg’s company, Meta. He has also threatened to sue Meta over the similarities with his app, suggested that it is falsely joyful, and boosted posts that suggested the launch of Threads had actually helped the launch of Twitter. Mr Musk has also attempted to suggest that Twitter is both free of censorship and the pressure to be happy. “You are free to be your true self here,” he wrote in his most recent post on the topic. He has also promoted a post from Twitter’s chief executive, Linda Yaccarino, in which she suggested that Threads’ success had actually helped Twitter’s growth. “Don’t want to leave you hanging by a thread… but Twitter, you really outdid yourselves!” she wrote. “Last week we had our largest usage day since February. There’s only ONE Twitter. You know it. I know it.” It is not clear how much the launch of Threads has boosted or hurt Twitter’s usage. But external estimates suggest that the site’s usage is “tanking”, according to experts. Meta’s Threads surged past 100 million signups in its first five days, according to Mark Zuckerberg. In doing so, it became the fastest online platform to hit the milestone, overtaking ChatGPT. The app has been setting new records for user additions since its launch on Wednesday, with celebrities from Jennifer Lopez to Kim Kardashian joining the platform seen as the first serious threat to the Elon Musk-owned microblogging app. Twitter has responded by threatening to sue Meta over the app, alleging that the social media behemoth used its trade secrets and other confidential information. That claim, legal experts say, could be hard to prove. Threads shares some resemblance to Twitter, as do the numerous other social media sites that have cropped up in recent months. It allows posts that are up to 500 characters long and include links, photos and videos of up to 5 minutes. The app’s sprint to 100 million users was much faster than the two months OpenAI-owned ChatGPT took in January, which had made it the fastest-growing consumer application in history, according to a UBS study. Still, Threads has some catching up to do. Twitter had nearly 240 million monetizable daily active users, according to a company statement in July last year. Additional reporting by Reuters Read More Twitter gets strange endorsement from Taliban over rival Threads Tucker Carlson’s Twitter show is haemorrhaging viewers, reports says Twitter traffic ‘tanking’ after record-breaking Threads launch SpaceX smashes reusable rocket record as Elon Musk makes bold Starship claim Twitter restores TweetDeck’s old, ‘better’ version – but for how long? Account tracking Elon Musk’s jet is now on Threads after Twitter suspended it

Amazon.com Inc.’s Prime Day sale can be a frustrating experience because the best deals are often gone in

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By Krystal Hu (Reuters) -Sapphire Ventures plans to invest over $1 billion in AI enterprise startups, doubling down on the

Canadians receive nearly a third of their news through social media, underscoring the potential impact of a plan

A well-known biochemist has shared a compelling analysis of what “probably” caused the Titan submersible to implode. Philip E. Mason, who goes by the username Thunderf00t on YouTube, said the main reason why the tiny OceanGate vessel failed was “so painfully simple” that he initially thought he must be making a “boneheaded mistake” in his calculations. However, he acknowledged, his theory behind the sub’s tragic destruction contradicts the widely-reported suggestion that it was like a "Coke can" which suddenly burst due to the high surrounding pressure. In a video posted on Monday, Mason suggested that “by far the most probable” cause of the catastrophe was a “single pinhole leak” which, at such a profound depth (the Titan is believed to have been 3,500 metres below sea level when contact was lost), would have been fatal. It is worth noting that authorities have not yet confirmed the cause of the disaster, which claimed the lives of all five people on board, and Mason's conclusions are based on his own scrutiny of the available information and his particular expertise. Sign up for our free Indy100 weekly newsletter “So how quickly would a single pinhole leak sink a sub like this?” the YouTuber asked in his lengthy tutorial. The answer, he pointed out, would greatly depend on the size of the leak. If it measured one 10th of a millimetre by one 10th of a millimetre, the vessel would take several hours to go down, he said. However, if the leak measured 1mm by 1mm, it would only take about 10 minutes for the sub to completely fill with water, and if it was 1cm by 1cm, around 10 seconds. Mason then pointed out that water entering any sized leak at that depth would be transformed by the pressure into a sort of “cutting jet”. “Faced with a soft material like plastic, a hair-sized leak would rapidly transform into [...] a millimetre-sized leak and then a centimetre-sized leak,” he explained. Why the Titan sub failed www.youtube.com He then set out why it was likely that the Titan suffered such a leak, pointing to the materials used to make it. He noted that most deep-sea submersibles essentially consist of a ball which is made up entirely of the same material, namely, metal. “No joints, nothing fancy, maybe a couple of seals – one for where you get in and out of the sub and one for mounting a window,” he said. And yet, the Titan was different. “The ends were made up of a metal, titanium,” the YouTuber said. But the problem was that the middle of the sub wasn’t: it was made out of a carbon fibre composite. The two materials have distinctly different compressibilities, with carbon fibre being much easier to squeeze than titanium. “Having a joint where one side will expand or construct more than the other can be a real problem,” Mason stressed. On the surface, when the different components of the vessel were sealed, it wouldn’t have mattered that the materials were different, he continued. However, once the Titan got down to its deepest point, the carbon fibre would have “wanted to shrink” while the titanium wouldn't have changed at all. He then played a clip showing the creation of the sub, in which OceanGate CEO, Stockton Rush, admitted that the carbon fibre and titanium components were held together with a “peanut butter”-like “glue”. Rush, who lost his life along with five others in the Titan disaster, then said ominously: “It’s pretty simple but if we mess it up, there's not a lot of recovery.” Analysing the vessel's construction, Mason then said he was “honestly stunned it survived any dives”. “The bottom line is the tube is more compressible than the end caps,” he continued. “The only way this could have possibly worked is if they used some exotic alloy of titanium, like they do with bone replacement joints, and it doesn't look like they did that.” Turning to what ultimately destroyed the Titan, he concluded: “What you're probably more looking at is the differential compression of the carbon fibre composite and the titanium resulting in a crack.” In other words, “a pinhole leak, which would rapidly widen due to the rapid ingress of the water, further widening the crack and the rapid flooding of the sub in probably a fraction of a second. “And when that water hammer hits the end of the sub, it's likely that the sub broke into pieces.” Wrapping up his video, he said: “It's a mind-blowingly simple explanation based around the most likely failure points.” Investigators are continuing to examine wreckage from the submersible which was recovered from the ocean floor at the end of June. They have yet to determine the cause of the explosion and, last week, the Marine Board of Investigation’s (MBI) chairman Captain Jason Neubauer said: “There is still a substantial amount of work to be done to understand the factors that led to the catastrophic loss of the Titan and help ensure a similar tragedy does not occur again.” 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.

In this day and age, it’s nearly impossible to live off the grid. A good

Scientists have invented a cloak inspired by Roman mythology that can cool anything it covers during the day and warm it up at night. The Janus thermal cloak, named after the two-faced Roman god Janus, could be used in everything from electric cars to space craft, with the researchers claiming it could even be used to build off-planet colonies on the Moon and Mars. “The thermal cloak is like clothes for vehicles, buildings, spacecrafts, or even extraterrestrial habitats to keep cool in summer and warm in winter,” said Kehang Cui, a materials scientist at Shanghai Jiao Tong University, who was involved in the research. “The cloak works basically the same way the Earth cools down, through relative cooling. The Earth is covered by the atmosphere, and the atmosphere is transparent to a certain range of electromagnetic energy we radiate.” The futuristic material, made of silica and aluminium, is able to achieve the heating and cooling effect passively, without the need for any outside energy. Covering electric vehicles in the cloak helps to cool them 8°C on a hot day and warm them 6.8°C on a cold night, helping to prevent deterioration of the battery. “This is the first time that we could achieve warming above the ambient temperature by almost 7°C during winter nights,” said Professor Cui. “This is also kind of surprising to us – there’s no energy input or sunshine and we can still get warming.” A study detailing the research, titled ‘Scalable and durable Janus thermal cloak for all-season passive thermal regulation’, was published in the scientific journal Device on Tuesday. Read More Record-breaking sugar battery could supercharge transition to renewable energy

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