Soberingly, air pollution can reduce life expectancy by ... the art piece was made using 2,000 photos of blue skies from around the world, printed on recycled paper and featuring handwritten ...

Selcuk Acar / Anadolu Agency via Getty Images A new, satellite-based instrument measuring air pollution in North America has sent its first images back to Earth, NASA announced in August.

“We’re also full steam ahead on a series of rulemakings across the power and transportation sector that are drawing down emissions and protecting communities from dangerous air pollution.