California Institute of Technology wins top 'Reinventing the Toilet' prize for solar system that breaks down waste into hydrogen gas
People living in the developing world could soon be flushing solar-powered toilets capable of creating hydrogen and electricity from that most renewable of sources - poo. Microsoft founder and philanthropist,...
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UK survey of 7-17 year-olds also highlights concern their views are not listened to by policymakers on climate change and environmental issues
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Tech giant kicks off major new campaign designed to promote new wave of ultra-efficient smart technologies