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. Sun, 19 May 2013 09:20:41 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 http://blogs.ei.columbia.edu/2011/10/14/8-ways-to-look-at-7-billion/ http://blogs.ei.columbia.edu/2011/10/14/8-ways-to-look-at-7-billion/#comments Fri, 14 Oct 2011 19:53:34 +0000 Kathy Zhang http://blogs.ei.columbia.edu/?p=18999 Interested in learning more about the world’s population? Here are some recent articles about the history, context and implications of 7 billion people living on earth. ]]> http://blogs.ei.columbia.edu/2011/10/14/8-ways-to-look-at-7-billion/feed/ 3