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.

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. 

December 31, 2015

With this year's ongoing El Niño event, parts of East Africa may be ripe for a potential outbreak of Rift Valley Fever. See how government agencies are using climate data to help predict, and hopefully prevent, an outbreak of this deadly mosquito-borne virus that affects both people and valuable livestock.

September 30, 2015

Tom Di Liberto explains how algae and other phytoplankton usually behave.

August 14, 2015

Think 115°F is uncomfortably hot? Imagine it being incredibly humid as well. 

Pages