After dropping out of school as a teenager because of poverty and drought William Kamkwamba built a windmill out of discarded materials in his village. Kamkwamba tells anchor Marco Werman how the windmill brought electricity to his tiny village in Malawi.
You've probably seen the sun-fueled cars on the road that support just a single passenger. Well thanks to students at the Netherlands' Eindhoven University of Technology, there is now a solar-powered car that can carry around the whole family of four.
On Tuesday, President Obama and his Chinese counterpart Hu Jintao agreed to cooperate on climate change and other important matters. Anchor Jeb Sharp talks with David Biello, the associate editor for environment and energy at Scientific American magazine.