Dell 2Q net income rises 16 percent

(AP) -- PC maker Dell Inc. said Thursday that its net income improved 16 percent in the most recent quarter, though a key measure called gross profit margin fell.

HP's 3Q numbers solid but could fuel doubts

(AP) -- Now that Mark Hurd is out as CEO of Hewlett-Packard Co., the world's biggest technology company is trying to prove to Wall Street that it can thrive under the sweeping changes he set in motion.

Geologists revisit the Great Oxygenation Event

In "The Sign of the Four" Sherlock Holmes tells Watson he has written a monograph on 140 forms of cigar-, cigarette-, and pipe-tobacco, "with colored plates illustrating the difference in the ash." He finds the ash invaluable ...

Most influential Twitter users revealed

With over 5.6 million followers each, Britney Spears and Lady Gaga are the most popular people followed on the social networking site Twitter. But they're not necessarily the most influential.

Exploring the role of gut bacteria in digestion

They congregate in the environments that suit them best; some prefer the dry, desert-like conditions of our forearms while others thrive in the Amazon-style humidity of our feet.

Mud Volcanoes on Mars

Spewing out material from deep underground, geological structures on Mars thought to be mud volcanoes could give scientists the clues they need to determine if life exists, or ever existed, on the Red Planet.

Drought drives decade-long decline in plant growth

Earth has done an ecological about-face: Global plant productivity that once flourished under warming temperatures and a lengthened growing season is now on the decline, struck by the stress of drought.

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