Archive: 06/04/2009

'Super Sherpa' climbs to clean up Everest

Apa Sherpa has stood on top of the world more times than anyone in history, and now he is heading back up Mount Everest, not for the fame or glory, but in the name of environmental protection.

dateApr 06, 2009 in Environment
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Poison: It's what's for dinner

As the U.S. Southwest grew warmer from 18,700 to 10,000 years ago, juniper trees vanished from what is now the Mojave Desert, robbing packrats of their favorite food. Now, University of Utah biologists have narrowed the hunt ...

dateApr 06, 2009 in Ecology
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