Nova - Can We Cool The Planet?

As global temperatures rise, scientists are exploring geoengineering solutions, from planting trees to sucking carbon out of the air to physically blocking out sunlight. But would it work? And what are the risks of engineering Earth's climate?

Series Website: http://www.pbs.org/wgbh/nova/

Recent and Upcoming Airings

11.3 11/1 3:00 am 11.3 11/1 4:00 am 11.3 11/2 9:00 pm