Are astronauts close to extinction?
Today's stock market has become a world of automated transactions executed at lightning speed. This high-frequency trading could make the financial system more efficient, but it could also turn small mistakes into catastrophes.
Why does it take so long to commercialize new technologies?
A novel approach could turn more sunlight into electricity.
VoIP does for voice what cloud computing did for the Web, experts say.
Nanoparticles cut the bleeding time in half for rodents.
Energy-saving process uses free heat to desalinate seawater.
New circuits bring low-power nanotube computers closer.
A new tool takes a hint from 1980s database programming.
EKG patterns show who will likely die after a heart attack.