How the technology behind biometric security works.
A Nobel Prize-winning discovery may redefine the way we treat diseases.
Online forums should offer much more than idle chatter.
Robots gain agility by watching their makers.
Translation software deciphers billboards and street signs.
Software aims for safer bypass operations.
Virologist C.J. Peters on bioterrorism preparedness.
The human liver cells in Linda Griffith's miniature device behave just as they would in the body, permitting more accurate drug and toxin testing.
If they're allowed out of the lab and into the field, crops genetically engineered to reproduce through cloning could feed the world's poor.