Kurzweil: Solar will meet 100% of energy needs by 2030(guardian.co.uk)
guardian.co.uk
Kurzweil: Solar will meet 100% of energy needs by 2030
http://www.guardian.co.uk/environment/2011/feb/21/ray-kurzweill-climate-change
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http://www.guardian.co.uk/environment/2011/feb/21/ray-kurzweill-climate-change
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