Saudi Arabia has emerged as a force in the football transfer market this year, offering eye-watering salaries that have lured a host of big names including Cristiano Ronaldo and...

His innovative alphabet brought literacy to a nation.

Solar panels and screens could become vastly more easy to make after a major breakthrough, according to the scientists who found it. The new discovery swaps an everyday material for one almost as rare as gold, the researchers say, and so could drastically cut the price of manufacturing the technology that relies on it. The breakthrough came after scientists discovered that chromium compounds can replace the metals osmium and ruthenium, which are used to harvest energy from the Sun and to create displays for uses such as mobile phones. Chromium is a relatively common material, best known for its use in chromium steel in the kitchen, or for the shiny look of motorcycles. It is also relatively easy to find: chromium is 20,000 times more prevalent in the Earth’s crust than osmium, and much cheaper to make. Scientists hope that it can be used for a variety of purposes, including a kind of artificial photosynthesis that will produce solar fuels. Plants are able to use that process to convert energy from sunlights into energy-rich glucose – and the scientists behind the new study say that it could help us do the same. The findings are described in a new paper, ‘Photoredox-active Cr(0) luminophores featuring photophysical properties competitive with Ru(II) and Os(II) complexes’, published in Nature Chemistry. Read More Astronomer uncovers ‘direct evidence’ of gravity breaking down in the universe Mark Zuckerberg hits out at Elon Musk for wasting time over cage fight Vote to empower autonomous ‘robotaxis’ from Cruise and Waymo divides San Francisco

Ben Bryant completed 24 of 32 passes and 234 yards and two touchdowns and ran for a touchdown, and Cam Johnson caught seven passes for 124 yards and a touchdown to lead Northwestern to a 45-43 victory Saturday over Illinois, ending the Illini’s hopes for a bowl berth

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Portugal’s Prime Minister Antonio Costa has resigned in a televised address, just hours after prosecutors detained his chief of staff in a probe into alleged corruption in his administration's handling of lithium mining and hydrogen projects. The 62-year-old, Portugal's Socialist leader since 2015, asserted his innocence but said that "in these circumstances, obviously, I have presented my resignation to the president of the republic". The state prosecutor's office said the Supreme Court was examining suspects' "use of the prime minister's name and his involvement" when carrying out allegedly illicit activities. It said the minister of infrastructure, Joao Galamba, and the head of the environmental agency were among those named as suspects. President Marcelo Rebelo de Sousa quickly accepted Mr Costa's resignation. He is expected to dissolve parliament and call for a new election. He said in a statement that he is calling parliament to convene on Wednesday, and he will speak to the nation after the Council of State gathers on Thursday. The prime minister teared up while thanking his family for their support. "I totally trust the justice system," he said. "I want to say eye to eye to the Portuguese that my conscience is clear of any illicit or censured act." He acknowledged that he was not "above the law". An investigative judge had issued arrest warrants for Mr Costa's chief of staff Vitor Escaria, the mayor of the town of Sines, and three other people because they represented a flight risk and to protect evidence, the prosecutor's office said in a statement. The judge is investigating alleged malfeasance, corruption of elected officials and influence peddling related to lithium mine concessions near Portugal's northern border with Spain and plans for a green hydrogen plant and data centre in Sines on the south coast. The police raids included the premises of the ministry of the environment, the ministry of infrastructure, Sines town council, private homes and offices. Portugal's lithium mines and green hydrogen projects are part of the continent's green initiative being pushed, and heavily funded, by the European Union. Mr Costa has been a major backer of the projects and an ally of Spain's acting Prime Minister Pedro Sanchez. He had looked set to remain in power for several years after his Socialists scored a landslide victory in elections last year, but in December 2022, his infrastructure and housing minister was forced to quit amid an outcry over a €500,000 (£434,000) compensation payment made to a board member of state-owned flag carrier TAP Air Portugal. The junior minister for infrastructure also stepped down. Ten senior government officials have left their jobs since Mr Costa's party won the 2022 ballot. Mr Costa said he had no prior indication he was being scrutinised by legal authorities. "This is a phase of my life that comes to an end," he said. Associated Press Read More Hundreds gather at vigil held for Ukrainian soldiers killed in missile attack Where the GOP presidential candidates stand on the war in Ukraine Orcas sink another yacht in relentless 45-minute attack Hundreds gather at vigil held for Ukrainian soldiers killed in missile attack Where the GOP presidential candidates stand on the war in Ukraine Orcas sink another yacht in relentless 45-minute attack

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