New designs for materials that repel all liquids.
A new project collects traffic data from GPS-enabled cell phones.
Synthetic biology could yield microbes that fight cavities and produce vitamins.
A new optical etching technique could lead to faster microchips.
Researchers have made new nano building blocks for optical computing and solar-cell coatings.
Sensors could one day diagnose and treat a soldier's injuries.
The 2008 presidential election could be shaken by flawed electronic voting technology.
RFID chips in U.S. passport cards and some driver's licenses are at risk of being counterfeited or tracked, researchers say.
Self-propelled microbots navigate through blood vessels.
A robot inspired by helper dogs could assist the disabled and the elderly.