Underinvestment has led to crumbling infrastructure in schools, hospitals and courts, Guardian study shows

• ‘Our school has been homeless for two years’

More than 1.5 million children are studying in dilapidated school buildings, a Guardian investigation has found, with years of underinvestment leaving England’s public infrastructure in a crumbling state.

A study of public sector building conditions, including hospitals, schools and courts, has found thousands are in need of urgent repair, with conditions so bad in many that they are endangering the lives of those who visit and work in them.

Reform leader demands apology from head of Tory party after she alleged his party’s online counter was manipulated

Nigel Farage has said he will take action against Kemi Badenoch unless she apologises for accusing him of publishing fake Reform membership data.

The Reform leader said he had opened up his database to media organisations after Badenoch claimed the rival party had coded an online counter to tick up automatically.

Carrier suspends flights to five Russian airports after early findings of investigation into crash on Christmas Day

The aircraft that crashed in Kazakhstan on Christmas Day, killing 38 people, experienced “external physical and technical interference”, according to preliminary results of an investigation, Azerbaijan Airlines said on Friday.

The early findings led the carrier to suspend flights to five Russian airports, citing “potential risks to flight safety”, adding to the two routes that were suspended immediately after the crash.

Geoffrey Hinton says there is 10% to 20% chance AI will lead to human extinction in three decades, as change moves fast

The British-Canadian computer scientist often touted as a “godfather” of artificial intelligence has shortened the odds of AI wiping out humanity over the next three decades, warning the pace of change in the technology is “much faster” than expected.

Prof Geoffrey Hinton, who this year was awarded the Nobel prize in physics for his work in AI, said there was a “10% to 20%” chance that AI would lead to human extinction within the next three decades.

Workers who reported symptoms of the illness often faced delayed or denied care and struggled to access benefits

A newly declassified US Senate report found that the CIA’s handling of mysterious health incidents known as Havana syndrome has been flawed and marred by inconsistent medical care, delayed compensation and communication failures – all while foreign adversaries remain “very unlikely” to be responsible.

Many cases of the syndrome have been reported, mostly among US officials posted abroad, and the phenomenon has led to theories they had been targeted by a hitherto unknown weapon using directed energy of some sort wielded by a hostile power.

Jazwell Brown, 49, is also charged with two counts of attempted murder following Christmas Day incident

A man has been charged with two counts of murder following the deaths of two women on Christmas Day in Milton Keynes.

Jazwell Brown, 49, has also been charged with two counts of attempted murder and one count each of possession of a knife blade/sharp pointed article in a public place and causing unnecessary suffering to a protected animal.

Americans point to coverage denials and steep profits from insurance industry after Brian Thompson’s killing

In a new poll, more than two-thirds of respondents said they believed denials of coverage and profits in the health insurance industry were partially responsible for the killing of Brian Thompson, the UnitedHealthcare CEO, in early December.

Thompson was shot dead on the streets of Manhattan. His killer fled, sparking a nationwide manhunt, which ended when Luigi Mangione was arrested and charged with the killing after being arrested in a Pennsylvania McDonald’s. Mangione’s alleged writings indicated that he was angry at the US healthcare industry and saw it as exploitative.

Coroner calls for improvements after Chloe Every was wrongly prescribed morphine shortly before she died

A coroner who ruled that “gross failure” in the hospital care of a disabled woman “possibly contributed to her death” has called for improvements to protect patients.

Graeme Irvine, the senior coroner for east London, said the inquest into the death of Chloe Every had revealed matters “giving rise to concern” while she was in the care of Barking, Havering and Redbridge university hospitals NHS trust.

Feud flared up when president-elect chose Sriram Krishnan, an Indian-born entrepreneur, as his AI adviser

Bitter in-fighting has broken out between the tech billionaire Elon Musk and Donald Trump’s hardline Make America great again (Maga) base after the US president-elect chose an Indian-born entrepreneur to be his adviser on artificial intelligence.

The row has pitted Musk and his fellow entrepreneur Vivek Ramaswamy against diehard supporters including the far-right activist Laura Loomer and Matt Gaetz, the former Congress member and abortive nominee for attorney general. The spat threatens to open up a chasm among Trump’s supporters over immigration, a key issue in his election victory.

Jane Doe alleges Shawn Carter and Sean ‘Diddy’ Combs sexually assaulted her at a 2000 MTV awards afterparty

Jay-Z’s legal efforts to dismiss a case accusing him of raping a 13-year-old girl in 2000 have been denied by a judge in New York, with the judge in the case condemning a lawyer for the hip-hop mogul for aggressive tactics.

Jay-Z, whose given name is Shawn Carter, has denied the allegations, but the judge in the case used strong language in attacking his legal team’s actions.