@calestous @EoinMcFadden how much conflict rare earth minerals would you need for that with current and upcoming tech? More than exists.
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@calestous you may enjoy this from always excellent@BBCTheInquiry 'Should we solar panel the Sahara'http://www.bbc.co.uk/programmes/p03bbk9m …Thanks. Twitter will use this to make your timeline better. UndoUndo
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