Northwestern University Professor of Earth and Planetary Science Yarrow Axford helps John understand what it means that an ice berg the size of Delaware broke away from Antarctica. Professor Axford tells us if the breakage is a climate change concern.[audio http://serve.castfire.com/audio/3375027/3375027_2017-07-12-173227.64kmono.mp3?ad_params=zones%3DPreroll%7Cstation_id%3D3759.mp3]
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