Mobile ads help grow Facebook's 1Q revenue 38 pct.

A year ago, Facebook was just testing the waters of mobile advertising, causing plenty of headaches for investors ahead of its massive initial public offering. It has since eased those worries.

Low carbon, moderate income and long life

(PhysOrg.com) -- A new study shows that countries with high incomes and high carbon emissions do not achieve higher life expectancies than those with moderate incomes and lower carbon emissions.

Sprint loss widens on Nextel, iPhone lifts sales

(AP) -- The impending shutdown of the Nextel network doubled Sprint Nextel Corp.'s loss in the first quarter, it said Wednesday, as it wrote down the value of the network and subscribers kept leaving it.

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