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Tim Radford -Antarctic glacier melt could raise sea level by 3m

LONDON, 21 May, 2016 – One of Antarctica’s great glaciers could become unstable if global warming continues at the present pace. As warm seas wash the ice shelf, the land-based mass of ice could begin to retreat, cross a critical threshold in the present century and then withdraw 300 kilometres inland. In the course of doing so it would spill …

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Smart Show (goharrison) with Cary Harrison – 12.21.15

ANTARCTIC ICE DRILLS: knowing whether rising carbon dioxide levels played a part, along with factors such as changes in Earth’s rotational tilt – would help scientists to better understand how ice sheets will behave as the world warms

Guest 1: Al Jazeera America’s Jake Ward

Inside Hitler’s Secret Nazi Bunkers (Exclusive)

Guest 2: Cary harrison takes you under Berlin’s current subway system into the 3rd Reich’s recently-discovered bunker systems.