Image caption, The Northern Bridge is the second major bridge to be targeted by Russia in recent days, Kyiv's mayor said A Russian strike has hit a second major bridge in Kyiv, Mayor Vitali Klitschko has said, as Russia ramps up attacks on critical infrastructure in the Ukrainian capital. The attack on Saturday morning damaged the road surface and trolleybus overhead wires on the Northern Bridge, Klitschko said. The strike comes after another key bridge in the city, Southern Bridge, has been targeted multiple times by Russian drones since Thursday, with Klitschko earlier warning that such attacks were tearing Kyiv apart. The two bridges link the eastern and western parts of the capital and had not been hit before Thursday, signalling a new stage in Moscow's attacks. Image caption, In the Thursday attack, a Russian drone hit cables of Kyiv's Pivdennyi bridge Writing on Telegram on Saturday, Klitschko said: Hitting the North Bridge.

Image caption, All metro and automobile traffic is now suspended across Kyiv's Pivdennyi bridge Intensified Russian drone and missile strikes are tearing Kyiv apart, the mayor of Ukraine's capital has warned. Vitaliy Klitschko said the city was now in a very dramatic situation as Moscow was battering its critical infrastructure, logistics, housing and other key facilities. He was speaking after Kyiv's defence council held a crisis meeting, following new Russian strikes on a key bridge that caused traffic chaos. The city's data centres have also been recently hit, resulting in internet outages. President Vladimir Putin earlier said Russia was acting in response to Ukraine's strikes on Russian energy facilities, despite the fact that it was Moscow that had first launched such attacks.

OpenAI fires three workers over mishandling'sensitive information' OpenAI has fired three researchers for allegedly mishandling information, including work that involved an external organisation that analyses artificial intelligence (AI) models. Our investigation confirmed that these individuals mishandled sensitive information outside established company procedures, violating our policies and breaking the trust essential to our work, a spokesperson told the BBC. The ChatGPT-maker did not name the sacked workers, but at least two of them were involved in safety research at the firm. The firings come as the debate over AI safety and the risks the technology may pose to humanity has intensified in recent weeks. We have parted ways with three individuals for violating our policies on accessing and handling sensitive company information, OpenAI's spokesperson said.

Why are these endangered moths swarming Australia's east coast? To play this video you need to enable JavaScript in your browser. Why are these endangered moths swarming Australia's east coast? The sudden influx of Bogong moths along Australia's east coast has caused a stir in cities like Sydney and Canberra, with people filming them infiltrating their homes and cars. The BBC's Helen Livingstone explains where they came from, and why there are so many.

What's gone wrong at Nike? How the world's sportswear giant lost its mojo It's been a difficult few years for Nike. The largest sportswear brand on the planet, named after the ancient Greek goddess of victory, has been losing of late. The one-time industry disruptor is now the establishment and in the middle of a tricky turnaround plan aimed at clinging on to market dominance. Nike's latest financial results show signs a turnaround strategy put in place by company veteran Elliott Hill, who was coaxed out of retirement two years ago to lead the firm, is working - but the pace of change is more marathon than sprint. However, its recovery has been dented by the loss of football star Kylian Mbappé, who ended his 20-year association with the brand last week to join fast-growing Swiss rival, On.

Vladimir Putin has said Russia will use all weapons at his disposal if it considers it has come under direct attack in its Baltic exclave of Kaliningrad. Addressing the Valdai foreign policy forum, Putin insisted Russia was not threatening anyone and merely responding to statements by Western leaders that Moscow was preparing for war in 2029 or 2030. Throughout this week, Russia has accused Nato of preparing to blockade its territory, which borders Lithuania and Poland, warning that it would even be prepared to use nuclear weapons if the West tried to cut off Kaliningrad from the rest of Russia. Nato has sought to calm the situation, stressing it is a defensive alliance and urging Moscow to stop its nuclear threats. Western allies have faced a surge in so-called hybrid warfare incidents blamed on Russia, particularly in Poland and the Baltics in recent months.

Britain is in talks with EU partners to release additional strategic fuel reserves, including diesel, if needed, the BBC understands. The talks come after President Donald Trump threatened to ban diesel exports from the US in a bid to reduce record prices at the pumps for Americans. Diesel prices in the UK also hit record highs this week and are hovering just under 200p per litre, according to motoring organisation the RAC. The US is a vital supplier of diesel to the world, exporting between 1.2 and 1.5 million barrels per day, with experts warning a ban on shipments abroad could put further pressure on prices in other countries. We're thinking about it very seriously, Trump said of an export ban at the weekend.

Two Russian drones have hit one of Kyiv's main bridges, bringing public transport in the Ukrainian capital to a halt and signalling a new stage in Moscow's attacks. The Pivdennyi or Southern bridge came under fire as a metro train was travelling across. Passengers described how dust from a blast wave entered their carriage through the ventilation system. The Pivdennyi bridge is one of the main arteries across the Dnipro river dividing western and eastern Kyiv. Kyiv's bridges had not been hit before Thursday's strikes - and despite a dramatic explosion close to a main support section, city authorities said preliminary checks did not find any critical damage to the structure.

President Donald Trump's push to rename AI may be behind an unprecedented rise in registrations for domain names in Slovenia, according to its official national registry. The president wants AI to be called super intelligence - or SI - the same initials used by Slovenian websites. She said the scale of activity in late September was unprecedented compared to the previous 12 months. President Trump called for the technology to be renamed during his speech to the United Nations General Assembly in New York on 11 September. The use of the word artificial makes it sound fake, he said.

What role would you play in the Traitors castle? The Celebrity Traitors is back. Twenty-one high-flying contestants are vying to win £100,000 for their charity of choice with all the charm, persuasion and manipulation they can muster. But what would your plan be if you were transported to the Scottish Highlands for the ultimate game of social politics? Are you a silent assassin, a strategic mastermind or an agent of chaos?