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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BRUSSELS NATO ships are on their way to the Aegean Sea to help Turkey and Greece crack down on criminal networks smuggling refugees into Europe, the alliance's top commander said on Thursday.
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.
WASHINGTON Federal Reserve Chair Janet Yellen returned to Capitol Hill with a brave face on Thursday amid a worsening meltdown on global stock markets and growing skepticism the U.S. central bank can carry out its long-planned pivot to "normal" monetary policy.
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
PAJU, South Korea North Korea said it was kicking out all South Koreans from the jointly run Kaesong industrial zone on Thursday, calling the South's move to suspend operations, in retaliation for Sunday's rocket launch by the North, a "declaration of war". | Video
WASHINGTON Nevada rancher Cliven Bundy was charged in federal court on Thursday with conspiracy, assault on a federal officer and obstruction of justice in connection with the 2014 standoff on federal land near his ranch.
ISTANBUL Turkish security forces have completed operations against Kurdish militants in a border town after weeks of fighting, Interior Minister Efkan Ala said on Thursday, raising hopes that a lockdown could be lifted.