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By Will Dunham and Scott Malone WASHINGTON/CAMBRIDGE, Mass. (Reuters) - Scientists said on Thursday they have for the first time detected gravitational waves, ripples in space and time hypothesized by physicist Albert Einstein a century ago, in a landmark discovery that opens a new window for studying the cosmos. The researchers said they detected gravitational waves coming from two black holes - extraordinarily dense objects whose existence also was foreseen by Einstein - that orbited one another, spiraled inward and smashed together. ...
George Clooney said he would meet with German Chancellor Angela Merkel and asylum-seekers about Europe's refugee crisis as he opened the Berlin film festival Thursday. Clooney, an activist for many humanitarian causes whose new movie "Hail, Caesar!" by the Coen brothers is kicking off the 11-day cinema showcase, said he wanted to hear how he could use his star power to lend a hand. "I'm having a meeting with Angela Merkel tomorrow to talk about and ask what messages and what things we can do... to help," said Clooney, who is in town with his wife Amal, a Lebanese-born human rights lawyer.
Federal Reserve Chair Janet Yellen returned to Capitol Hill on Thursday amid an ongoing meltdown in global equity markets and growing skepticism that the U.S. central bank can carry out its long-planned pivot to "normal" monetary policy. Yellen repeated to the Senate Banking Committee the testimony she delivered on Wednesday to a House of Representatives committee, putting a brave face on the U.S. economic recovery while acknowledging that a weakened global economy and steep slide in U.S. equity markets is tightening financial conditions faster than the Fed wants. Yellen warned on Wednesday that the rout, if proven to be "persistent," could change the U.S. economic outlook - and by implication the Fed's policy plans.