13 Unexpected Sources of Energy that Could Save the World

If humans are going to keep living in the style to which we're accustomed, we need to find alternatives for fossil fuels. Partly that's because we need to reduce pollution — and partly because those fossil fuels are going to run out. But alternative forms of energy may look a lot weirder than you think. » 3/31/14 6:11pm 3/31/14 6:11pm

Greener Skies: Quiet, Fuel-Efficient Airplanes Race in NASA Challenge

This past weekend, a NASA-sanctioned 400-mile "personal air vehicle" race was held in Santa Rosa, CA, to see who had created the quietest, most fuel-efficient plane that's still reasonably fast. Those involved hope pushing these ideas forward will make personal airplanes cost effective someday. These PAVs run as quiet as … » 8/12/08 9:40pm 8/12/08 9:40pm

FuelPod2 Brings the BioDiesel Processing Plant to Your Driveway

I like the idea of Biodiesel because it means cheap, clean-burning fuel. Or in the case of FuelPod2, free, clean-burning fuel. The FuelPod2 takes any used cooking oil you may have, and converts it into usable Biodiesel, which runs in any standard diesel engine. The FuelPod can convert up to 50 litres (just over 13… » 12/03/07 2:10pm 12/03/07 2:10pm