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A rock the size of three football fields passed relatively close to Earth. It wasn't a surprise, and neither will be the arrival of others. NASA has a calendar if you'd like to keep track of what's coming. But remember: Some space rocks, such as the meteorite that exploded over Russia last year, aren't expected.

Some consider former NSA contractor Edward Snowden a hero for releasing classified material to the media; others argue that he has irreparably harmed national security. Famed whistleblower Daniel Ellsberg and a former CIA director face off in the latest Intelligence Squared debate.

Better fuel efficiency for such vehicles is a "win, win, win," the president said. It will help reduce dependency on foreign oil, save drivers' money and cut greenhouse gas emissions. Manufacturers, though, say the standards could make the vehicles more expensive and less safe.

Police attacked an opposition camp that's been the center of the massive anti-government protests that began last November. In fighting Tuesday, at least 18 people were killed and dozens injured. Police said the dead included six officers; seven protesters were also killed.

The dead included one policeman and three civilians. Protesters want Prime Minister Yingluck Shinawatra to step down.

With so much pressure on schools to improve test scores, music and the arts sometimes fall off the list of priorities. That's led advocates for music education to point out its benefits in the classroom.

Obamacare set national rules for appealing a denied health claim — a process that used to vary by employer and state. Consumers should appeal more often, advocates say. Half the time, they'll win.

Luminescent paint absorbs energy during the daylight hours and then glows green in the dark. If widely adopted, the inventor envisions an energy-saving smart highway.

A telephone box near British spy agency GCHQ is now adorned with a trio of snoops, after a mural was added to a wall this weekend. The art is believed to be the work of street artist Banksy.

Months after exposing the National Security Agency's surveillance program, The Washington Post and The Guardian win a Pulitzer for public service. Donna Tartt won for fiction with The Goldfinch.