400 ppm – GLOBAL IDEAS Blog https://blogs.dw.com/globalideas Thinking for a cooler world Thu, 02 Oct 2014 08:32:05 +0000 en-GB hourly 1 Live like millions of years ago? https://blogs.dw.com/globalideas/live-like-millions-of-years-ago/ Wed, 15 May 2013 07:51:13 +0000 http://blogs.dw.com/globalideas/?p=10377