Clean Air

air pollution

Breathing Easier? Satellites Show The Air Down Here On Earth Is Cleaner Than It Used To Be

It’s not just space NASA focuses on. A fleet of satellites also studies the Earth. That vantage point is showing most of us are breathing cleaner air.

06/27/2014

(credit: Thinkstock)

Auto Emissions Fell 20% In 5 Years

America’s CO2 emissions may have reached a 20-year low. But why?

10/17/2012

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