What if we could solve the problem of global warming just by scrubbing the air clean of carbon dioxide, before it has the chance to add the to blanket of greenhouse gases?
We could have a source of never-ending power and , at the same time, reduce our carbon emissions ot virtually zero. This is the astonishing vision of former NASA physicist JOhn Mankins.
Astonomer and professor Roger Angel thinks he can diffract the power of the sun by placing trillions of lenses in space and creating a 100,000-square-mile sunshade.
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