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The number of electric vehicles on sale in the U.S. continues to grow.
Photo: Taber Andrew Bain/CC BY (Flickr)
The EPA's Clean Air Act standards protect the health of all Americans, especially our children.
Photo: USEPA/Flickr
Introducing the paper airplane toss at the 2016 Ig Nobel Prize Ceremony. Courtesy of Improbable Research.
White House/Flickr
Pete Markham/Flickr
Marco Verch/CC BY SA (Flickr)
Pesticide Action Network
Photo: New Jersey NaAtional Guard
Rising sea levels are already a threat to coastal historic buildings and the communities they anchor in places like Maryland’s Chesapeake Bay. Photo: Octavio Abruto/iLCP
Photo: Kyle James/CC BY-SA (Flickr)
USDA
Wayne National Forest/Creative Commons (Flickr)
Photo: Chris Hunkeler/CC BY-SA (Flickr)
Images Money/CC BY 2.0 (Flickr)
NASA