Can Geoengineering “Undo” Climate Change?
Clip: Season 47 | 4m 41s | Video has closed captioning.
Discover how geoengineering solutions—from techniques as natural as planting trees, to vacuuming CO2 out of the air, to science-fiction alternatives like blocking sunlight—can help humanity turn the tide on climate change, and why these approaches are controversial.
Problems Playing Video? | Closed Captioning