The departure in 1975 of the last Americans from Vietnam didn't only end a tragic chapter in the history of the two countries ...

The D.C. area's air quality is worsening, per the American Lung Association, which gave the region an "F" grade on a key ...

Under the Trump administration, NOAA has minimized an announcement that climate-warming carbon dioxide concentrations in the ...

The Trump administration has terminated federal employees in charge of U.S. global climate policy and climate aid, the State ...