Sean Riley explores the work of gutsy, innovative scientists attempting the "world's toughest fix" yet: hacking Earth to drastically alter its climate and save the planet. In this hour, Riley investigates four proposed geoengineering ...See moreSean Riley explores the work of gutsy, innovative scientists attempting the "world's toughest fix" yet: hacking Earth to drastically alter its climate and save the planet. In this hour, Riley investigates four proposed geoengineering solutions to our climate change problem and goes into the lab with the inventive scientist and engineers who have hatched these outlandish solutions.
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