What's hidden under the Greenland ice sheet?

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October 17, 2017 Today's TED Talk What's hidden under the Greenland ice sheet? 10:49 minutes · TED2017 The Greenland ice sheet is massive, mysterious -- and melting. Using advanced technology, scientists are revealing its secrets for the first time, and what they've found is amazing: hidden under the ice sheet is a vast aquifer that holds a Lake Tahoe-sized volume of water from the summer melt. Does this water stay there, or does it find its way out to the ocean and contribute to global sea level rise? Join glaciologist Kristin Poinar for a trip to this frozen, forgotten land to find out. Watch now »   Playlist of the Day What's happening to the ocean? Are we turning the oceans into warm, noisy, uninhabitable bodies of acid? The short answer is, yes -- but there's still hope. Watch » 5 talks · Total run time 1:10:35 are you a science fan? TED's "Science worth knowing" newsletter Photo: Flickr / NASA Goddard Space Flight Center (CC BY 2.0) Subscribe to TED's biweekly "Science worth knowing" newsletter! We'll bring you the stories we're talking about from around the world of science. Subscribe now »   Download the TED app

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