You've probably already heard of the idea of harvesting electricity from body heat to power small devices, such as those in the far-flung idea of a body area network. Now, a similar idea has been ...

Researchers at the University of Washington (UW) have taken the term ‘green power’ literally by running an electric circuit from the power generated by trees. Sure, there isn’t much electrical power ...

For the first time researchers have run an electrical circuit entirely off power in trees. The findings suggest a new power source for wireless sensors -- and a way to monitor tree health. You've ...