News aggregation is the search-engine giant's weak spot, but paying hundreds of millions for Digg may not be the solution.
A large-scale tidal-power unit has started up in Northern Ireland.
Researchers show a low-cost route to making materials for advanced batteries in electric cars and hybrids.
Replacing sapphire with silicon could lead to more-affordable LEDs.
A tiny lens integrated into semiconductor lasers promises better portable chemical sensors.
A catalytic process could improve thermochemical routes to ethanol.
MobileMe is facing problems endemic to cloud computing.
A new startup hopes to compete in the crowded Web-application infrastructure market by making its platform open source.