Wikipedia launches iPhone application

Wikipedia said it has released an iPhone application as part of a drive to open the pages of its revered online encyclopedia to the booming ranks of smart phone users.

Charitable benefits help new daily-deal sites stand out

They're like Groupon for bargain-hunting do-gooders. Two daily-deal websites based in the Nashville area have a charitable twist to their local online coupons: Part of the money goes to a local nonprofit.

Video: How is ceviche 'cooked?'

What does it mean to have "cooked" something? Is heat the only way to break down proteins and transform raw ingredients?

Video: Why isn't weed killer working anymore?

Farmers used to worry about weeds. Then, herbicides solved that problem. At least for a while. In 1997, there were 432 new patents for herbicides; by 2009, there were only 65.

Climate change threatens Caribbean's water supply

Experts are sounding a new alarm about the effects of climate change for parts of the Caribbean—the depletion of already strained drinking water throughout much of the region.

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