Archives: January2010

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• North America’s Cooling Due to Natural Causes in 2008?

  An unusually long cooling of the Pacific Ocean lowered temperatures across North America—but it’s not proof that global warming has slowed down, scientists say.

  
  
  
  
  
  
  
  
  
  

• Stuck Mars Rover About to Die?

  Built to rove for 90 days, Spirit has lasted six years on Mars. But now it’s stuck and may lose power by May. Even standing still, though, Spirit can do a surprising amount of science, NASA says. Video.