The first sign-language dictionary that's searchable by gesture.

A program to boost TB drug compliance rewards patients with cell-phone minutes.

How an outdated algorithm put secure Internet transactions at risk.

Can simulated handwriting stop the spambots from getting through?

The electronics industry hopes to woo consumers with eye-popping technology.

Dense films of carbon nanotubes store large amounts of energy.

A Yale spinoff hopes to solve the big problem with desalination.

A process for converting coal into natural gas could help reduce emissions.

Research shows that photonic crystals can change color as quickly as other technologies.

Video-enhancing software developed for the CIA is coming to consumers.

Transplanted stem cells restore normal behavior in brain-damaged rodents.

A protocol that could make the Internet more secure is finally being implemented.

Research in mice reveals why brain cells become deaf to appetite-suppressing signals.

A prototype fuel cell runs on a wide range of fuels without turning up the heat.

Technical advances jump-start electric cars, wind turbines, and solar power.

Stretchable electronics and the strongest material ever were just two achievements of 2008.

A compact lens could make high-speed Internet access commonplace on trains.

Obama has transformed the use of the Internet in political campaigns--and he might do the same in governing.

Advances in robotics for personal assistance, medicine, and the military in 2008.

The business of social networking, cloud computing, and a flaw in the fabric of the Internet top the most notable stories of 2008.

Computer interfaces, wireless devices, memory, and microprocessors were all hot topics in 2008.