The Web is returning to its social roots. But is it getting ahead of itself once again?
Hybrids, plug-ins, and extended-range electric cars are hitting the market. Use this interactive primer to learn how they work.
The philanthropic effort dubbed the $100 Laptop has not met its grand initial goals. But its first deployment, in Peru, may turn skeptics into believers.
A new lithium-ion battery from A123 Systems could help electric cars and hybrids come to dominate the roads.
Technology Review presents its annual list of the 10 most exciting technologies.
Photosynth is still a work in progress. It is dazzling, but what is it for?
In Iraq, soldiers conducting frontline street patrols finally get software tools that let them share findings and plan missions.
Recent fraud allegations are ominous for those who see virtual worlds as future centers of e-commerce.
Researchers are beginning to crack the code that gives humans our way with words.
Twitter is at the heart of the phenomenon called microblogging. Meet its founder, Evan Williams.