http://blogs.ei.columbia.edu 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. Tue, 21 May 2013 15:39:03 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 http://blogs.ei.columbia.edu/2009/12/22/cities-are-moving-ahead/ http://blogs.ei.columbia.edu/2009/12/22/cities-are-moving-ahead/#comments Tue, 22 Dec 2009 18:20:23 +0000 Stephen Hammer http://blogs.ei.columbia.edu/?p=1088 http://blogs.ei.columbia.edu/2009/12/22/cities-are-moving-ahead/feed/ 2