July 3, 2008 4:41 PM

New satellite to shed light on Earth's warming

NASA plans to launch a new satellite next year that will help scientists fill in a gap in their understanding of global warming: the role of clouds and airborne particles. The satellite Glory, targeted for launch next June, will give scientists a much better tool to measure particles than any satellite so far. The particles, known as aerosols, are bits of things such as dust and smog.

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