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Tue, May 14 2013 at 10:10 AM
Video: A project at CalTech and NASA's Jet Propulsion Laboratory is trying to measure the carbon footprint of human activity in the Los Angeles basin.
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Tue, May 14 2013 at 9:59 AM
Video: Dorset, Minnesota, chooses its mayor from a hat. This year, the winner was a 4-year-old boy.
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Mon, May 13 2013 at 9:54 AM
Video: The amount of carbon dioxide in the atmosphere has surpassed a threshold that scientists say signals we are running out of time to reverse the impact of global warming.
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Mon, May 13 2013 at 9:49 AM
Video: The legendary newscaster will leave TV journalism next summer.
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Mon, May 13 2013 at 9:34 AM
Video: Astronaut Chris Hadfield released his own cover of the David Bowie song online.
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Fri, May 10 2013 at 12:56 PM
Plucked from the TV archives: Watch as actor Jimmy Stewart shares a poem about his beloved dog, Beau.
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Fri, May 10 2013 at 11:13 AM
Watch this amazing video of freediver Kimi Werner placidly swimming alongside a great white shark.
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Fri, May 10 2013 at 9:45 AM
Video: Matt Lauer opens Friday’s broadcast with a breathtaking (and, according to Savannah, stomach-churning) view from the top of One World Trade Center as workers prepare to lift the final pieces of the spire that will take the tower to its full height of 1,776 feet.
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Fri, May 10 2013 at 9:39 AM
Video: New diet calls for repeating the same meals every day in order to help shed the pounds.
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Fri, May 10 2013 at 9:31 AM
Video: Andrew 'Bart' Simpson became trapped under a 72-foot catamaran when it capsized.
