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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.


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