John Callas

Dec. 04, 2009

Free The Rover

NASA scientists are still trying to free the Spirit rover, which has been stuck in Martian soil since April.

mars, rover, spirit, nasa

Apr. 24, 2009

Checking In With the Mars Rovers

Mission managers are investigating unexplained reboots and 'amnesia events' on board the Mars rover Spirit. We'll get an update on the rovers' status.

mars, rovers, spirit, computer, robot

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Michael Pollan Talks Plants and Food

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Myths and Tips on Keeping Your Cool This Summer

Think caffeine dehydrates you? Or that you can't get too much water on a hot day? Douglas Casa, of the Korey Stringer Institute, sets the record straight.

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