The da Vinci robot can shorten surgical recovery times.
China is adding nuclear, hydroelectric, wind and solar power at an unrivaled pace.
The laser, a device used in everything from astrophysics to biology, was invented 50 years ago.
In the Bolivian Andes lies a vast salt flat that may shape the future of transportation.
Engineers restore high-resolution photos of the moon.
Researchers at Lawrence Livermore National Lab will try to start self-sustaining fusion reactions using the world's largest laser system.
Amputee athletes are getting faster and stronger.
New detectors may finally reveal dark-matter particles.
Carefully grown carbon-nanotube arrays could be the basis of new energy-storage devices and chip-cooling systems.
The biggest physics experiment ever, CERN's new particle accelerator, goes live this summer.