Printing flexible electronics on plastic provides a way to wirelessly power gadgets.
A walk with GPS reveals some of the problems with the system.
Nanoparticles with a completely new shape may lead to cheaper catalysts that could make many experimental-energy technologies more practical.
Scientists have discovered a drug that boosts cellular metabolism in mice, mimicking a healthy workout.
Residents of the virtual world Second Life rise up to protest technical troubles brought on by a burgeoning population.