Pacemakers powered by patient's heartbeat alone

Researchers have created an experimental device that powers a pacemaker using only harvested energy from a beating heart.

NASA detects "heartbeat" of smallest black hole

NASA's Rossi X-ray Timing Explorer (RXTE) satellite has identified a candidate for the smallest-known black hole.

Nanogenerator could power cellphone through the beat of a heart

Scientists have created what they say is the first practical nanogenerator, capable of powering a phone or iPod with the beats of the user's own heart.