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The team at Dartmouth College mined 180 million tweets from 900,000 users to understand word clippings — like "awks" as "awkward." The researchers want to understand how such words originate and how they spread.

Politicians of the world have caught on to the fact that Twitter can help get out the party line.

The president said intelligence agencies would now need court approval before accessing phone data of hundreds of millions of Americans. He also directed the agencies to stop spying on the leaders of friendly nations. The changes come amid criticism directed at the NSA.

Home wart-freezing devices can spark fires, the Food and Drug Administration warns, and people have been burned. People also can be injured by using these frostbite-inducing tools too enthusiastically, dermatologists say, damaging skin as a result.

Coverage of President Obama's speech about proposed changes for the National Security Agency continues with more of his comments, plus analysis.

Coverage of President Obama's speech Friday wraps up with analysis of his proposed steps to "transition" rather than end the NSA program.

Richard Powers' new novel tells the story of an avant-garde classical composer who finds himself dabbling in DNA. He "gets obsessed with finding music inside of living things," Powers explains, and, as a fugitive, ends up leading officials on a low-speed chase.

Freedom Industries has been blamed for a chemical spill that left around 300,000 people without water for days. Last week, a chemical the company uses in cleaning coal leaked into the Elk River and into the public water system.

Venezuela is running out of newsprint and newspapers are shutting down. Media outlets say that it's another form of harassment by a government that often doesn't like what independent media reports.

After failing to agree upon an extension for federal jobless benefits to the long-term unemployed, Congress is vowing to keep trying. The help can't come soon enough for many of the 1.4 million unemployed who saw their checks suddenly cut off last month.