Can we cool the planet? / produced by Ben Kalina ; written and directed by Ben Kalina & Jen Schneider ; a NOVA production by Mangrove Media LLC for WGBH Boston in association with ARTE France.
As global temperatures rise, scientists are exploring solutions from planting trees to sucking carbon out of the air to geoengineering. But would they work? And what are the risks of engineering Earth's climate?
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