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Officials say the FBI didn't open a formal investigation into Wade Michael Page about six years ago because he didn't seem to be a threat.

Missouri's Claire McCaskill is one of the most embattled Senate Democrats in the country. Conservative outside groups have been running TV ads against her for months. Tuesday night, Missouri voters in the Republican primary chose Congressman Todd Akin to face McCaskill in the fall.

Social media has become a huge part of how people experience the web. So it's not surprising that Google's move to integrate "personal results" into its search results — drawing from the Google+ community — wasn't praised by the folks who run rival social networks.

Republican presidential hopeful Rick Perry has been aboard a bus touring Iowa hoping to score an upset in next Tuesday's caucuses. Perry spent Thursday trying to reverse the surge that challenger Rick Santorum has seen in a recent poll.

In Thomas Caplan's latest novel, The Spy Who Jumped Off the Screen, Ty Hunter, a spy-turned-movie star, is called back to service at the U.S. president's behest. The book is Caplan's third work of fiction, and an early draft got a little editing help from the real-life ex-president.

One of the last remaining Navajo Code Talkers from World War II has died. Keith Little, who transmitted codes in important Pacific battles such as Iwo Jima and Saipan, died Tuesday at 87. He led the Navajo Code Talkers Association in recent years and fought to get recognition for the Code Talkers, who were ordered to keep their contribution to the war effort secret for decades after the war ended.

Science fiction's job is to give us a map of where we're headed. From Jules Verne to William Gibson, sci-fi authors describe their visions of the future, and how people might live in it. We ask Intel's futurist for his list of favorite sci-fi books.

When the singers released remixes featuring each other this week, the Internet's jaw dropped.

"Peng Liyuan has been touted now as sort of the Carla Bruni of China," says one music critic. She's regularly featured on Chinese television's blockbuster Spring Festival Gala, and she's also a major general in China's People's Liberation Army.

Senegal's capital of Dakar remains jittery, with demonstrators and police locked in running street battles. Some of the protests have been led by rap artists, who are mobilizing the youth and putting pressure on Senegal's leader to step down.