Never mind using the solar wind to power spacecraft — that’s old hat. Scientists at Washington State University want to use solar wind to power the entire world. A humongous solar sail could be used to harvest the power of solar winds, generating 1 billion billion gigawatts of electricity.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.