photovoltaic – 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 Grape skins as energy? https://blogs.dw.com/globalideas/grape-skins-as-energy/ Wed, 02 May 2012 14:22:17 +0000 http://blogs.dw.com/globalideas/?p=5139