We can cut carbon emissions by one third by replacing fossil fuels with renewable energy sources for electricity and heat production." –Lester R. Brown, Janet Larsen, Jonathan G. Dorn, and Frances Moore, Time for Plan B: Cutting Carbon Emissions 80 Percent by 2020
Lecture by Lester Brown at Google headquarters. Topic: Plan B: Rescuing a Planet Under Stress and a Civilization in Trouble. Watch the video.