Wild ideas to slow or reverse climate change
Fake trees to pull carbon dioxide out of the air, sun shields to deflect heat and radiation without damaging the atmosphere, giant ice cubes mined from comets to cool down the oceans. Okay, that last one is from a Futurama episode. But some researchers really do think we can try to slow or reverse climate change with technology built for that purpose — and that we’ve already changed the Earth’s environment so much that we may have no choice. I guess it’s worth a try.
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