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NPR Health and Science (6 unread)

Another Loose End Tied Up In Bird-Dino Debate

Posted: January 29th, 2010, 3:22pm CST

Researchers have debated whether or not ancient animals called alvarezsaurs should be considered dinosaurs or birds. Now, the discovery of Haplocheirus, a 160-million-year old alvarezsaur that predates the earliest birds, sets the record straight: alvarezsaurs are dinosaurs.
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NASA Prepares Spirit For Winter On Mars

Posted: January 29th, 2010, 12:00pm CST

NASA rover Spirit is stuck in the Martian dust. But don't give up yet, says Steven Squyres, principal investigator of the Mars Exploration Rover Mission. Squyres discusses tactics for freeing Spirit and what projects are on the horizon for the rover if it survives the Martian winter.
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Stargazing At The Opera

Posted: January 29th, 2010, 12:00pm CST

The Hayden Planetarium in New York takes opera to the moon with a new production of Il Mondo Della Luna. Diane Paulus and Philip Bussmann talk about merging cosmos footage with music, how science can enhance the arts and the future of technology and theater.
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Mystery Of The Bdelloid Dry Spell Solved

Posted: January 29th, 2010, 12:00pm CST

Bdelloid rotifers haven't had sex for 30 million years and that's puzzling. Most asexual animals are doomed to extinction. Reporting in the journal Science, Paul Sherman and Chris Wilson explain the extraordinary adaptations that allow these rotifers to persist in celibacy.
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Could An Asteroid Slam Earth Without Warning?

Posted: January 29th, 2010, 12:00pm CST

The $4 million the United States spends each year to detect near-Earth comets and asteroids is not nearly enough to detect all potentially threatening objects, according to a new report. Faith Vilas and Michael A'Hearn, two authors on the report, discuss options for keeping Earth safe.
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Sean Carroll On The Mysteries Of Time

Posted: January 29th, 2010, 12:00pm CST

It's easy to find a dictionary definition of "time." But ask a group of theoretical physicists and the answer isn't as clear. Sean Carroll of CalTech discusses the mysteries of time in his book, From Eternity to Here: The Quest for the Ultimate Theory of Time.
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