After deflecting the US Department of Justice's attack on its illegal monopoly in online search, Google is facing another attempt to dismantle its internet empire in a trial focused on abusive tactics in digital advertising. The trial that opened Monday in an Alexandria, Virginia, federal court revolves around the harmful conduct that resulted in US district Judge Leonie Brinkema declaring parts of Google's digital advertising technology to be an illegal monopoly in April. The judge found that Google has been engaging in behavior that stifles competition to the detriment of online publishers that depend on the system for revenue. Google and the justice department will spend the next two weeks in court presenting evidence in a "remedy" trial that will culminate in Brinkema issuing a ruling on how to restore fair market conditions. If the justice department gets its way, Brinkema will order Google to sell parts of its ad technology - a proposal that the company's lawyers warned would "invite disruption and damage" to consumers and the internet's ecosystem.

'Done properly, AI releases human capacity,' Simon Stiell said. 'Done properly, AI releases human capacity,' Simon Stiell said. AI'carries risks' but will help tackle global heating, says UN's climate chief Mon 22 Sep 2025 15.54 EDTLast modified on Mon 22 Sep 2025 16.04 EDT Harnessing artificial intelligence will help the world to tackle the climate crisis, but governments must step in to regulate the technology, the UN's climate chief has said. AI is being used to make energy systems more efficient, and to develop tools to reduce carbon from industrial processes. The UN is also using AI as an aid to climate diplomacy.

US tech giant Nvidia will invest up to $100bn (£73bn) in OpenAI, the firm behind ChatGPT, the companies announced. Nvidia said it will supply high-performance chips needed for the processing power required by artificial intelligence (AI), of which OpenAI is a specialist. Described as a strategic partnership by Nvidia, it is the latest move by two high profile tech firms in the global AI race, where China is an emerging rival. The announcement comes after a series of high-profile investments by Nvidia, including a $5bn investment in Intel and a £2bn investment in the UK's AI sector. Nvidia said its latest investment will go towards growing data centres for OpenAI's next-generation AI infrastructure.

"The males lost all their energy and lay immobile on the bottom while the female swam away actively." Breakthroughs, discoveries, and DIY tips sent every weekday. Marine biologists recently documented a promising (if intimate) marine moment in the ocean waters near northeast Australia. For the first time, researchers recorded a leopard shark () mating event. But the footage doesn't showcase a pair of the endangered predators going at it--the brief tryst involved three participants.

Gabrielle surging into major hurricane as forecasters warn of'life-threatening' impact to East Coast Fed governor installed by Trump outlines bold case to slash interest rates to 2.5% in months So is Meghan Markle's former best pal about to tell all? Jessica Mulroney has an axe to grind and'knows where the bodies are buried', friends warn amid claims she's penning memoir Incredible secret DNA weapon that nailed Bryan Kohberger... and how no criminal can hide again Why Jennifer Aniston is'being silenced' from speaking out on close friend Jimmy Kimmel's firing Six charities including Teenage Cancer Trust cut ties with Sarah Ferguson after leaked email showed her apologising to'supreme friend' Jeffrey Epstein Will Smith's'nepo baby' son Jaden sparks outrage after landing coveted job at designer fashion brand I've had crippling anxiety for years. Heather Locklear fans can't believe how amazing the Melrose Place vet looks at 63... 40 years after fame hit Whoopi Goldberg claims The View is too fearless not to discuss Kimmel canning... despite completely avoiding subject at crucial moment There's a new dating trend that's great news for guys who struggle to get laid. Even divorce lawyers say it's the secret to happiness. But ladies, I promise it'll backfire I'm a 49-year-old beauty editor and menopause gave me hair loss and short, brittle locks that wouldn't grow.

Trump officials are expected to link the use of pain reliever Tylenol in pregnant women to autism, according to US media reports. At an Oval Office event on Monday, the US president will reportedly advise pregnant women in the US to only take Tylenol, known as paracetamol elsewhere, to relieve high fevers. At the Charlie Kirk memorial service on Sunday, Trump said he had an amazing announcement coming on autism, saying it was out of control but they might now have a reason why. Some studies have shown a link between pregnant women taking Tylenol and autism, but these findings are inconsistent and do not prove the drug causes autism. Tylenol is a popular brand of pain relief medication sold in the United States, Canada and some other countries.

W hat if I told you I could stop you worrying about climate change, and all you had to do was read one book? Great, you'd say, until I mentioned that the reason you'd stop worrying was because the book says our species only has a few years before it's wiped out by superintelligent AI anyway. We don't know what form this extinction will take exactly - perhaps an energy-hungry AI will let the millions of fusion power stations it has built run hot, boiling the oceans. Maybe it will want to reconfigure the atoms in our bodies into something more useful. There are many possibilities, almost all of them bad, say Eliezer Yudkowsky and Nate Soares in If Anyone Builds It, Everyone Dies, and who knows which will come true.

UK startup Wayve begins testing self-driving tech in Nissan cars on Tokyo's streets British startup Wayve has begun testing self-driving cars with Nissan in Japan ahead of a 2027 launch to consumers, as the company said it was in talks for a $500m investment from the chip-maker Nvidia . Wayve, based in London, said it had installed its self-driving technology on Nissan's electric Ariya vehicles and tested them on Tokyo's streets, after first agreeing a deal with the Japanese carmaker in April. The British company is racing against rivals - such as Tesla, Google's Waymo, and China's Baidu - to prove that its technology can work for carmakers, after rising rapidly to become one of the country's best-funded startups and a rare UK artificial intelligence pioneer. Nissan was the first carmaker to say publicly that it was using Wayve's technology, although the founder of Wayve, Alex Kendall, said the company was working with large manufacturers in Europe, North America and Japan. Wayve on Friday said Nvidia, the world's most valuable listed company, thanks to the AI boom, had signed a letter of intent for a possible $500m investment in Wayve's next funding round.

Britons are concerned about AI's impact on the economy and jobs in particular. Britons are concerned about AI's impact on the economy and jobs in particular. TBI says poll data threatens Keir Starmer's ambition for UK to become artificial intelligence'superpower' The Tony Blair Institute warned that the poll findings threatened Keir Starmer's ambition for the UK to become an AI "superpower" and urged the government to convince the public of the technology's benefits. TBI commissioned a survey that found 38% of Britons see AI as an economic risk while 20% see it as an opportunity. The poll of more than 3,700 adults also showed that lack of trust was the biggest barrier to adoption.

We consider the model-free feature screening in large-scale ultrahigh-dimensional data analysis. Existing feature screening methods often face substantial computational challenges when dealing with large sample sizes. To alleviate the computational burden, we propose a rank-based model-free sure independence screening method (CR-SIS) and its efficient variant, BanditCR-SIS. The CR-SIS method, based on Chatterjee's rank correlation, is as straightforward to implement as the sure independence screening (SIS) method based on Pearson correlation introduced by Fan and Lv(2008), but it is significantly more powerful in detecting nonlinear relationships between variables. Motivated by the multi-armed bandit (MAB) problem, we reformulate the feature screening procedure to significantly reduce the computational complexity of CR-SIS. For a predictor matrix of size n \times p, the computational cost of CR-SIS is O(nlog(n)p), while BanditCR-SIS reduces this to O(\sqrt(n)log(n)p + nlog(n)). Theoretically, we establish the sure screening property for both CR-SIS and BanditCR-SIS under mild regularity conditions. Furthermore, we demonstrate the effectiveness of our methods through extensive experimental studies on both synthetic and real-world datasets. The results highlight their superior performance compared to classical screening methods, requiring significantly less computational time.