WASHINGTON/CAMBRIDGE, Mass. Scientists have for the first time detected gravitational waves, ripples in space and time hypothesized by Albert Einstein a century ago, in a landmark discovery announced on Thursday that opens a new window for studying the cosmos.
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WASHINGTON The number of Americans filing for unemployment benefits fell more than expected last week, suggesting the labor market remains on solid footing despite slowing economic growth and a stock market rout.
MUNICH Major powers began a new round of Syria talks on Thursday focusing on calls for a ceasefire and access for aid, but the mood was dour with Moscow showing no sign of calling off its bombing in support of a massive new government advance. | Video
WASHINGTON Federal Reserve Chair Janet Yellen returned to Congress with a brave face on Thursday amid a worsening meltdown in global markets and growing skepticism the U.S. central bank can carry out its long-planned pivot to "normal" monetary policy.
NEW YORK/WASHINGTON Democratic U.S. presidential candidate Hillary Clinton will try to mend her badly wounded campaign in a debate on Thursday with rival Bernie Sanders, an encounter many of her donors said would allow her to play a role that suits her - embattled underdog.
MONTERREY, Mexico A battle between the feared Zetas drug cartel and rivals at a prison left 52 people dead in the northeastern Mexican city of Monterrey, authorities said on Thursday, days ahead of a planned visit by Pope Francis to another jail in Mexico's far north. | Video
An American Airlines flight made an emergency landing at Los Angeles International Airport on Thursday morning after smoke was reported in the cabin, local media reports said.
BAGHDAD Russia is ready to sell civil airliners to Iraq and keep providing it with military aid to fight Islamic State, Deputy Prime Minister Dmitry Rogozin said on Thursday, accompanied on a trip to Baghdad by the biggest Russian delegation in years.