Facebook to test mobile app shopping tab

Facebook said Monday that it will begin testing a shopping tab for its mobile app as it works to ramp up advertising and online commerce offerings.

Climate models used to explain formation of Mars valley networks

The extensive valley networks on the surface of Mars were probably created by running water billions of years ago, but the source of that water is unknown. Now, a team of Penn State and NASA researchers is using climate models ...

Streaming TV services: What they cost, what you get

Cable or satellite packages, excluding promotions, can easily run $70 to $100 a month. That gets you hundreds of diverse channels—ESPN for sports lovers, premium channels like HBO and Showtime, the major networks and niche ...

Big technology deals don't always compute for buyers

Dell's proposed $67 billion acquisition of data storage company EMC is the most expensive ever done involving two technology companies. Many of the tech industry's other notable deals haven't panned out as well as the buyers ...

Scientists say vines strangle carbon storage in tropical forests

Although useful to Tarzan, vines endanger tropical forests' capacity to store carbon. In a major experimental study in Panama, Smithsonian researchers showed that woody vines, or lianas, slow tropical forest tree growth and ...

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