The EPA proposed limiting the amount of harmful "forever chemicals" in drinking water to the lowest detectable levels, a move it said will save thousands of lives and prevent serious illnesses.
The population of an endangered bird, the Everglade snail kite, has rebounded recently. Scientists it's all thanks to an invasive snail that has provided kites with a new abundant food source.
An unregulated landfill that accepts vegetative waste has burned underground for months. Neighbors were inundated with smoke and left wondering why the site wasn't regulated in the first place.
Firefighters are often "woefully under-equipped" to handle train accidents that emit hazardous materials. Most of those serious enough to cause evacuations happened near small towns.
Environmental advocates opposed to the oil drilling project have called it a "carbon bomb," but proponents such as Alaska politicians and labor unions say it will bring jobs and revenue to the state.
The 26-year-old protester, Manuel Esteban Paez Terán, was killed in January in an Atlanta-area forest as police cleared an encampment of activists who oppose the construction of Atlanta's "Cop City."
The 212-car train that derailed outside of Springfield, Ohio, on Saturday was not carrying any toxic materials, several state and local agencies confirmed. The EPA will stay on site for cleanup.
Police arrested at least 35 people after activists set heavy equipment on fire. Tensions have been building for years over the plan to build a large police training facility.
Right now, two-thirds of the ocean are regulated by a fragmented patchwork of agreements and organizations. This treaty plans to unite countries to improve the health of the ocean.
The cougar's death set off a debate between tribes in the Los Angeles area and wildlife officials over whether scientists could keep samples of the animal's remains for future testing and research.
NPR's a Martinez talks to Lisa Speer of the Natural Resources Defense Council's International Oceans program, about a treaty that will open the door to more marine conservation.