Spacecraft have used ion drives to explore the moon and deep space, but a new study aims to boost the electric propulsion idea to keep satellites around Earth alive longer.

The search for planets beyond our solar system may be a little easier, thanks to a new comparison of sun-like stars that has revealed a key difference in the chemistry of stars that have planets and their barren cousins and solved a long-standing mystery about our own sun's chemistry.

Scientists from the University of California, Berkeley and Switzerland-based NLV Solar are developing solar cells based on one of the most widely available minerals on the planet, pyrite.

AP - Hewlett-Packard Co. said Wednesday it is buying the 3Com Corp. networking company for $2.7 billion, the latest move by the world's No. 1 personal computer maker to expand into more profitable areas than PCs.

AFP - Microsoft's new search engine Bing, which is seeking to chip away at Google's dominance in Internet search, is teaming up with WolframAlpha, another rival for the Google crown.