A smoky wildfire burning in Boise National Forest, Idaho.
September 6, 2018

Wildfires are burning larger and more intensely than before, emitting smoke that poses a health risk to people. FIREX will provide information about what chemicals smoke emits in order to keep people healthy. 

July 27, 2018

Strong winds whipped wildfires into a frenzy near Athens, Greece, during the end of July, leading to one of the worst wildfire tragedies in the country's history.

Ragweed
June 7, 2018

Hay fever might leave you wanting to live north of that Westeros Wall, but the farther north you live in the contiguous United States, the worse your allergies may get in a warming climate.

Sensor attachment
August 28, 2018

Richmond's citizen-scientists took to the streets on specially equipped bikes and cars to find out where it’s hottest—and where residents might be most vulnerable to extreme urban heat.

November 15, 2017

Suffocating smog stifled communities across northern India and Pakistan in mid-November 2017.

April 18, 2017

Faced with the potential of a large expense related to water quality, Maine's Portland Water District had two investment choices: conservation or concrete.

April 22, 2016

From protecting our waterways to reducing overfishing, we've made a lot of progress since the first Earth Day. Take a look at five big wins in the 46 years since 1970.

February 17, 2016

The dismal rainy season in southern Africa has destroyed crops, killed livestock, and even led to blackouts. El Niño probably had something to do with it. 

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