http://blogs.ei.columbia.edu/2011/08/05/have-we-crossed-the-9-planetary-boundaries/ 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, 17 May 2013 14:54:37 +0000 hourly 1 http://wordpress.org/?v=3.5.1 http://blogs.ei.columbia.edu/2011/08/05/have-we-crossed-the-9-planetary-boundaries/comment-page-1/#comment-19479 Kristopher R. Carambelas Fri, 19 Aug 2011 20:32:19 +0000 http://blogs.ei.columbia.edu/?p=16717#comment-19479 The Holocene, at least in the Great Basin portion of North America, was anything but stable.

]]> http://blogs.ei.columbia.edu/2011/08/05/have-we-crossed-the-9-planetary-boundaries/comment-page-1/#comment-19421 Christopher Watts Wed, 17 Aug 2011 20:12:56 +0000 http://blogs.ei.columbia.edu/?p=16717#comment-19421 9 should surely be 10. Exponential population growth should surely be no.1.

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