Many military installations are along coastlines and are vulnerable to rising seas, including military bases on the Virginia coast, which face dangers of flooding.
California is expected to begin easing sweeping water use and drought restrictions after an extraordinary winter of storms. But a fierce debate rages over whether the rules should become permanent.
The sunken Hero, an Antarctic research vessel from the 1960s, is leaking oil into Willapa Bay, where more than half of the state's oysters are grown. And no one knows how to remove it.
The EPA is not going ahead with a proposed ban on a pesticide called chlorpyrifos, saying there's still scientific uncertainty over its safety. Environmental groups say it can harm young children.
Capturing carbon emissions from coal plants would reduce coal's effect on climate change. But high costs and other factors have stymied efforts to use that technology at more U.S. power plants.
New EPA administrator Scott Pruitt has decided not to ban chlorpyrifos, a pesticide widely used on produce. That's despite evidence previously compiled by EPA showing it could pose risks to consumers.
After devastating floods, California is looking to spend billions on dams and levees. Some are calling for a new approach to flood control, one that mimics nature instead of trying to contain it.
An M-44, which sprays predators with sodium cyanide, detonated on a teen and his dog earlier this month in Idaho. Now the family and others are petitioning the USDA to end its use of the devices.
The controversial study of climate engineering — aka deliberately messing with Earth's temperature — was finally starting to regain a measure of respectability. And then came President Trump.
President Trump has signed an executive order intended to roll back climate change regulations. David Greene speaks with former Republican Rep. Bob Inglis about the implications.