Oceans are a tough place for any technology, but Australia's AquaGen has plans to generate power beneath the waves even in the middle of the Perfect Storm. The company's SurgeDrive equipment can be set up in "wave farms," a matrix...

Heeding nature's call is unavoidable, but at least SEaB Energy's MuckBuster lets you cash in on your family's number twos (numbers two?). The MuckBuster is a self-contained anaerobic digester, built inside a repurposed shipping container. It can produce renewable energy...

What a great idea — a solar electric lawnmower. After all, it's usually sunny when you're cutting the grass, so why not harness all that energy to spin a mower blade? You charge its removable polymer-ion battery inside, and while...

Video projectors that can throw up a big bright picture a great for gaming and home theater, but most of them eat their way through an expensive bulb every 1500 hours or so, while consuming more electricity than Grandma's space...