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Its environment and population are enduring major shifts as the country goes big on mining and as effects of climate change set in. See Mongolia's changes close up in this immersive photo essay.

The Environmental Protection Agency recently released new rules that decide which bodies of water fall under federal protection. But a case before the U.S. Supreme Court throws those rules into question.

The string of storms has left at least 17 people dead since late last month.

In some higher elevation communities, snow is falling on top of huge amounts already burying cars and homes.

Officials continue to test and monitor the water.

Melting glaciers are leaving behind unstable lakes around the world. Millions of people live downstream, in places increasingly threatened by deadly flash floods. What will it take to protect them?

This month marks the 400th anniversary of the founding of Jamestown, Va., the first permanent English settlement in North America. Many historians see Jamestown as the birthplace of modern America. Was the original colony really a success?

Historical markers were once just for American history. But many now claim aliens have visited Earth from outer space — and they aren't hedging.

Thousands of troops from 20 nations led by the U.S. have been carrying out essentially one-sided warfare for most of the past month in southeast Europe.

William Donelson came back to New Bern, N.C., to find his one-story brick apartment condemned. The town was hit by a nearly 10-foot storm surge from Hurricane Florence.