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A "green glacier" of trees is steadily taking over native grasslands. Landowners are banding together to treat the problem with fire.

In the Ozarks, the growing college town of Fayetteville, Ark., is using clean energy to power city facilities and embracing nature-based solutions to climate threats.

GPS collars on cattle are letting ranchers remove fences in the West. That's good for wildlife and for the land.

Their dams cause floods, and that gets them in trouble with humans. But in the right place, more water can be a big help.

The agency claimed that 10 children's deaths were linked to the shots, although it did not release evidence to support the assertions.

The birds lingered for days at a Catholic school near Cincinnati as agencies haggled over who was responsible for removing them. Officials said the public health risk was low.

It's not just humans who suffer from leading one another astray. So do fish, flies and even bacteria.

An E.P.A. site listing the causes of climate change no longer includes the main one: human activity.

Born into an aristocratic British family, he turned his knowledge of the world's largest land mammals to the cause of saving them from poachers.

A digital atlas of ancient Rome's highways and byways reveals a road network that was more extensive than thought.