http://blogs.ei.columbia.edu/2011/02/10/glacial-deposits-a-clue-to-reconstructing-the-history-of-the-antarctic-ice-sheet/ Tapping experts in climate, geology, oceanography, ecology, sustainable development, global health, energy, food and water, State of the Planet captures stories of how the Earth works and how we can sustainably make our lives better. Fri, 14 Jun 2013 16:28:17 +0000 hourly 1 http://wordpress.org/?v=3.5.1