About 1 in 10 fish in the lake show serious physical deformities — the result, one biologist says, of selenium poisoning.
Sacred-site preservation and civic engagement are not the same.
On an Indian reservation in Nebraska, state and federal politics interfere with the effort to simply educate the kids.
"One thing that I repeatedly heard," says Jenni Monet, a journalist on the scene, "is that this fight is not over."
For weeks, members of the Standing Rock Sioux have gathered in Cannonball, North Dakota, standing against the Dakota Access pipeline. The government has now halted construction pending reassessment of the project.
Want to visit a place with clean air? Really clean air? Maybe the cleanest of any urban area in the world? We check out a place north of the Arctic Circle that gets an A+ in the newly updated WHO Global Urban Ambient Pollution Database.
The haze is often so thick that people drive with their fog lights on until mid-morning. New York's air, in comparison, "feels as clear as water from a mountain stream." Rhitu Chatterjee writes.
A recent investigation by USA Today into lead levels in water systems across the country found more than 2,000 examples of systems that pose a risk to consumers.
New restrictions have reduced the number of cars on the road, but that might not make much of a difference.