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Antarctica

Robot 'dolphins' give clues to Antarctic melt in data revolution

OSLO, Nov 10 Dolphin-sized robots are giving clues to a thaw of Antarctica's ice in a sign of how technology is revolutionizing data collection in remote polar regions, scientists said on Monday.

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Obama urges Americans to get behind Clinton, slams Trump

PHILADELPHIA President Barack Obama painted an optimistic picture of America's future and offered full-throated support for Hillary Clinton's bid to defeat Republican Donald Trump in a speech that electrified the Democratic National Convention. | Video