
During deep sleep, waves of cerebrospinal fluid (blue) coincide with temporary decreases in blood flow (red). Less blood in the brain means more room for the fluid to carry away toxins, including those associated with Alzheimer's disease.
Fultz et al. 2019A study of 11 sleeping brains sheds some light on the mysterious link between sleep problems and Alzheimer's disease. The flow of cerebrospinal fluid through the brain appears to be the key.
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The Islamic State named Abu Ibrahim al-Hashimi al-Quraishi as its new leader days after ISIS founder Abu Bakr al-Baghdadi killed himself during a U.S. raid on his compound in northwest Syria.
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White House Policy Official Corroborates Ukraine Narrative — But Saw Nothing Illegal News
Timothy Morrison verified to House investigators that President Trump leaned on Ukraine to launch investigations he thought might help him. He worried about blowback — but not legal implications.
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On Halloween, Police Fire Tear Gas At Costumed Hong Kong Protesters News
Police fired tear gas and closed off sections of central Hong Kong and Kowloon, as protesters defied the city's mask ban with costumes depicting Guy Fawkes, the Joker and Chinese President Xi Jinping.
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U.S. Recovers More Than $700 Million From Malaysian Financier In Slush Fund Scandal News
Assets forfeited by financier Jho Low range from the luxury Viceroy L'Ermitage hotel in Beverly Hills to a business jet. Millions of dollars in business holdings are also included.
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Halloween Quiz: Test Your Knowledge Of Global Disease Costumes News
People have been dressing up in costumes inspired by diseases for a long, long time. See if you can ace our quiz.
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Iraqi Prime Minister Set To Step Down Amid Swell Of Anti-Government Protest News
President Barham Salih said Thursday that the premier, Adil Abdul-Mahdi, has agreed to resign, though timing is unclear. Abdul-Mahdi's ouster has been a major demand in weeks of widespread protests.
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A broad new national survey examines media use among children and teenagers and the very different ways young people are using their devices.
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