‘Grand Canyon’ under Antarctica tied to ice loss

MSNBC: A newly discovered Antarctica valley buried by ice and as deep as the Grand Canyon could be contributing to rising sea levels, scientists reported Thursday. The ancient topography is such that relatively warm sea water could be eating away at the ice edge -- and a question for future research is whether that process is happening elsewhere along Antarctica's coastal rift valleys. A few other ice-covered valleys have been found but the geology of this one, discoverer Rob Bingham told NBC News,......

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