Families Cheer, Some Doctors Worry as Nursing Homes Open Doors Wide to Visitors

NASA wants to smash a spacecraft into an asteroid, but don't worry. Earth isn't at risk.

Neuroscientists explore mysterious 'events' in the brain that open new avenues for understanding brain injuries and disorders

Open-sourcing of protein-structure software is already paying off. The big trade-off is between computational intensity and the size of the complex.