Astronauts have been adjusting to the challenges of sleeping in space for years, including light exposure and zero gravity. The lessons learned from their experiences could help ensure that the first crewed missions to Mars get enough rest.

The husband of former US Speaker Nancy Pelosi suffered a fractured skull in the attack at his home.

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The tsunami-damaged Fukushima Daiichi nuclear power plant began its third release of treated and diluted radioactive wastewater into the sea after Japanese officials said the two earlier releases ended smoothly

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Texas would expand what can be defined as sexually explicit material or potentially harmful to children in order to ban books from public and charter school libraries, under a bill given final passage by the state Senate late Tuesday night and sent to Republican Gov. Greg Abbott. The Texas move is the latest attempt to ban or regulate reading material in conservative states around the country. Critics say the standards set in the Texas bill are too vague, will snag books that are not inappropriate, and that materials dealing with LGBTQ+ subject matter are more likely to be targeted for bans. The bill passed by the GOP-controlled Legislature defines “sexually explicit material” as anything that includes descriptions, illustrations or audio depicting sexual conduct not relevant to required school curriculum, and prohibits it from school libraries. The bill requires the state’s Library and Archives Commission to adopt standards that schools must follow when purchasing books, and a rating system that would be used to restrict or ban some material. “What we’re talking about is sexually explicit material ... that doesn’t belong in front of the eyes of kids,” said the bill sponsor, Sen. Angela Paxton, a Republican. “They shouldn’t be finding it in their school library.” Abbott, a Republican, previously joined a former GOP lawmaker’s campaign to investigate the use of books in schools covering topics of race, gender identity and sexual orientation. That inquiry included a list of more than 800 books. In April, leaders of a rural central Texas county considered closing their public library system rather than follow a federal judge’s order to return books to the shelves on themes ranging from teen sexuality and gender to bigotry and race. Under the measure passed Tuesday night, book vendors would have to rate books based on depictions or references to sex. "Sexually relevant” material that describes or portrays sex but is part of the required school curriculum could be checked out with a parent's permission. A book would be rated “sexually explicit” if the material is deemed offensive and not part of the required curriculum. Those books would be removed from school bookshelves. State officials will review vendors’ ratings and can request a rating change if they consider it incorrect. School districts and open-enrollment charter schools will be banned from contracting with book sellers who refuse to comply. Read More Ukraine war’s heaviest fight rages in east - follow live Charity boss speaks out over ‘traumatic’ encounter with royal aide

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US leaders are mounting an urgent effort to prevent Israel's war against Hamas and a resulting civilian catastrophe in Gaza from escalating into a widening regional conflict that could snowball into an even greater geopolitical crisis after this month's horrific attacks.

Rescue teams in Zimbabwe are continuing the search for survivors, three days after a disused gold mine in the country's Chegutu district collapsed, killing at least 10 illegal miners.

The House descended into chaos on Wednesday afternoon as the chamber voted along party lines to punish a Democrat over the long-shuttered Trump-Russia investigation. Democrats booed and heckled Republican House Speaker Kevin McCarthy on Wednesday as the GOP voted to censure California representative Adam Schiff for his efforts to investigate the 2016 Trump campaign’s ties to Russia. On cameras of the House floor, Democrats could be seen rallying near the lectern and chanting, “Shame!” as the Speaker announced the result of the vote, which he said was punishment for “misleading the American public.” On Wednesday, the House voted 213-to-209 largely on party lines to censure Mr Schiff. Republicans have claimed that Mr Schiff had misled the American public about the Trump-Russia investigation, which ended without proof that the Trump campaign had coordinated with Russia but found that Russia’s actions had been taken to benefit the former president’s campaign and harm Hillary Clinton’s bid for the White House. Republicans argue that Mr Schiff lied when he argued that there was evidence to support the idea of collusion between the Trump campaign and Moscow. He was previously removed from the House Intelligence Committee by Speaker Kevin McCarthy for the same reason. A previous version of the censure, which had included a $16m fine, was voted down with some Republican opposition. In a speech from the floor, the California Democrat remained defiant, saying he was being punished for pursuing the truth by a party that’s attached itself to conspiratorial thinking about the election. “You who are the authors of the big lie about the last election must condemn the truth tellers and I stand proudly before you,” Mr Schiff said. “No matter how many false justifications or slanders you level against me, you but indict yourselves,” he added. “As Liz Cheney said, there will come a day when Donald Trump is gone. But your dishonor will remain.” New York Democrat Dan Goldman agreed, calling the censure vote a “phony ploy to punish Adam Schiff for speaking truth to power” in a floor speech of his own. “One of my colleagues says, ‘We will hold members accountable.’ You are the party of George Santos. Who are you holding accountable?” he added. Former Speaker Nancy Pelosi laid into them as well: "Today we are on the floor of the House where the other side has turned this chamber—where slavery was abolished, where Medicare and Social Security and everything were instituted—they’ve turned it into a puppet show." “They’ve turned it into a puppet show and you know what? The puppeteer, Donald Trump, is shining a light on the strings. You look miserable,” she added. You look miserable.” Mr Schiff’s enemies, meanwhile, accused him of supporting a narrative that supposedly caused a great divide between members of families all across the country. Anna Paulina Luna, the GOP lawmaker leading the resolution, personally accused him of having “permanently destroying family relationships”. “By repeatedly telling these falsehoods, Representative Schiff purposely deceived his Committee, Congress, and the American people,” the resolution read. Previously, Schiff had said the censure resolution “would accuse me of omnipotence, the leader of some a vast Deep State conspiracy, and of course, it is nonsense.” Beyond the Trump-Russia investigation, Mr Schiff also became a target of the Republican caucus due to his prosecution of Mr Trump during his first impeachment trial, when he was accused of improperly pressuring Ukrainian President Volodymyr Zelensky into launching a criminal investigation into Joe Biden — at the time, apparently, with the hopes of politically damaging the Democratic candidate ahead of the 2020 election. That investigation was never launched but Rudy Giuliani, who was a central figure in trying to make it happen, would later go on to become Mr Trump’s legal counsel in his bid to overturn the election following his defeat. The toothless censure of Mr Schiff is likely to be little more than a consolation prize for Republicans who had originally wanted an investigation into the origins of the Russia probe to uncover a vast “Deep State” conspiracy against Mr Trump, which never materialised. The leader of that investigation, John Durham, appeared on Capitol Hill for a hearing of the House Judiciary Committee separately on Wednesday where Mr Schiff grilled him over whether he had been concerned about efforts by a group of Russians to reach out to the Trump campaign and offer damaging information about Hillary Clinton. Republicans, meanwhile, voiced their displeasure over how Mr Durham’s investigation had fizzled without any major victories in the effort to prove a long-reaching shadowy conspiracy against Mr Trump. 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