Google's stock price topped $800 for the first time Tuesday amid renewed confidence in the company's ability to reap steadily higher profits from its dominance of Internet search and prominence in the increasingly important mobile device market.

Yahoo is laying off 2,000 employees as new CEO Scott Thompson sweeps out jobs that don't fit into his plans for turning around the beleaguered Internet company.

Looking for a promising career in a lousy economy? A new study suggests you're apt to find it in apps — the services and tools built to run on smartphones, computer tablets and Facebook's online social network.

Geothermal energy developers plan to pump 24 million gallons of water into the side of a dormant volcano in Central Oregon this summer to demonstrate new technology they hope will give a boost to a green energy sector that has yet to live up to its promise.

Yahoo Inc. fired Carol Bartz as CEO Tuesday after more than 2½ years of financial lethargy that had convinced investors that she wouldn't be able to steer the Internet company to a long-promised turnaround.

Pandora Media Inc. sold its initial public offering of stock at $16 per share late Tuesday, fetching twice as much as the popular but unprofitable Internet radio service expected less than two weeks ago.

Hoping to do for the written word what iTunes did for music, the online document-sharing service Scribd is opening an Internet store that will offer new sales opportunities for authors and publishers, and possibly spawn more bargains for book lovers.