Green LED Could Mean a Lighting Revolution
April 9, 2010 by
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Red light emitting diodes were easy, and have been around for a while. Blue LEDs were harder; Shuji Nakamura won the million euro Millenium Technology Prize for figuring them out.
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Green LED Could Mean a Lighting Revolution
Bye Bye Glaciers: 2 More Gone From Glacier National Park
April 9, 2010 by
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Two USGS researchers collect data in Glacier National Park in 2008. Photo courtesy of U.S. Geological Survey .
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Bye Bye Glaciers: 2 More Gone From Glacier National Park