Plus: Amazon workers who backed data center limits face potential termination. A startup claims it broke through a bottleneck that's holding back LLMs AI startup Subquadratic came out of stealth last month with a huge claim: it had solved a mathematical bottleneck that had held back large language models for almost a decade. The purported breakthrough comes from slashing the number of computations transformers need to carry out to generate answers. The result is a faster and cheaper LLM that uses far less energy than any other model on the market. Many experts remained skeptical--but Subquadratic has started to share the receipts. They suggest that their approach might be worth paying attention to.

Weekly quiz: How many SpaceX employees just became millionaires? This week, the White House hosted a UFC fight on its South Lawn, Royal Marines boarded a Russian shadow fleet oil tanker, and a schoolgirl said she would be left staring at a wall if social media was banned for under-16s. But how much attention did you pay to what else happened in the world over the past seven days? Try last week's quiz, or have a go at something from the archives . Musk's SpaceX overtakes Amazon to become world's fifth most valuable firm For the first time, individual investors can take a stake in Elon Musk's rockets-to-AI company.

Plus: The Pentagon says it used Grok in strikes on Iran. For decades, physicists have hunted for weakly interacting massive particles (WIMPs), a leading candidate for dark matter. But their search has run into a new problem: neutrinos. These tiny particles from the sun and other stars can create a "neutrino fog" that drowns out any signal of dark matter. Hitting the neutrino fog does not, however, mean an end to the search. Researchers just have to shift the focus of their hunt.

This week only, every donation is doubled! Halfway through our Summer Membership Drive, we're still well behind where we need to be. But there's good news: This week, every donation will be doubled up, to $50,000 We need you right now. We need you right now. Trump's Justice Department Backs Elon Musk in Data Center Lawsuit DOJ urges judge to throw NAACP's legal action over xAI's gas turbines in Mississippi.

This week only, every donation is doubled! Halfway through our Summer Membership Drive, we're still well behind where we need to be. But there's good news: This week, every donation will be doubled up, to $50,000 We need you right now. We need you right now. The wave of booing aimed at AI-pilled commencement speakers signals a sea change in public opinion.

AI will lead to more need for workers rather than make people redundant, Amazon founder Jeff Bezos predicted during an appearance at a tech conference in Paris. Bezos pushed back against growing concerns that AI will replace large numbers of workers. Instead he argued that the tech will unlock new opportunities and increase demand for human labour. This is in contradiction to some other tech and political figures - including former UK prime minister Rishi Sunak, now an adviser to Microsoft and AI firm Anthropic, who recently said AI was having an impact on young people's job prospects . I know there's a lot of concern that many people have, including many smart people, that AI is going to make humans redundant and so on, Bezos said.

SpaceX staff and guests celebrate the company's IPO in New York on Friday. SpaceX staff and guests celebrate the company's IPO in New York on Friday. SpaceX overtakes Amazon to become world's fifth most valuable company Elon Musk's firm briefly reached $2.97tn valuation days after its IPO following purchase of AI coding startup Cursor SpaceX has overtaken Amazon to become the world's fifth most valuable company days after its stock market debut . The milestone came as Elon Musk's company agreed to buy the startup behind the AI-powered coding app Cursor for $60bn (£44bn), in an attempt to capitalise on the technology's success as a coding tool. SpaceX is the parent of Musk's AI business, xAI, which will be able to boost its capabilities in an area - AI systems writing code - that has proven to be a strong commercial success for Anthropic, the rival company behind the Claude chatbot.

Musk's SpaceX buys AI coding start-up for $60bn days after IPO SpaceX has agreed to buy AI coding start-up Cursor for $60bn (£45bn) just days after its bumper initial public offering (IPO). Elon Musk's rocket company will take over Anysphere, which makes the artificial intelligence coding agent. The move comes after SpaceX joined New York's tech-focused Nasdaq stock exchange on Friday in the biggest ever listing, valuing it at more than $2tn and raising $85.7bn . A surge in SpaceX's share price on Monday and Tuesday saw the company overtake Amazon to become the world's fifth most valuable company. The companies have been partners since April, when SpaceX announced it had the right to either buy it for $60bn, or pay $10bn for the work they have done together.

IPO mints Musk as world's first trillionaire - now SpaceX is public, it will be harder than ever not to have a stake in its future I'm filling in for your usual host Blake Montgomery, who is out this week on vacation. Today, we'll be talking about the historic SpaceX IPO and the US government's surprise order to limit the use of Anthropic's most advanced AI model over cybersecurity concerns. Elon Musk's SpaceX hit the market on Friday in the biggest IPO of all time, raising $85.7bn and easily shattering the previous record of $29.4bn set by the Saudi oil giant Aramco. The rocket, AI and satellite communications company ended the day at $160.95 per share, up from its IPO price of $135 and satisfying any Wall Street skepticism over the unorthodox rollout of the stock. SpaceX's successful market debut turned Musk into the world's first trillionaire, an unprecedented accumulation of wealth that supporters touted as a testament to his financial genius and critics denounced as a symbol of a broken economic system.

Elon Musk's SpaceX achievements have made him the world's first trillionaire, but Senators Bernie Sanders and Elizabeth Warren view his wealth as an indictment of capitalism.