June 3, 2019, 1:32 p.m. by Katy Rank Lev

Our stockpile of this nonrenewable resource is being squandered.

March 14, 2019, 7:03 p.m. by Bryan Nelson

It's not something you might expect from one of the driest places on Earth.

August 15, 2018, 2:32 p.m. by Noel Kirkpatrick

By speeding up magnesite's natural process, they may have opened the door for a large-scale climate change solution.

May 24, 2018, 8:17 a.m. by Russell McLendon

When the government fails to protect a public resource like a river, our hopes often fall to a loose coalition of citizen conservationists.

December 4, 2017, 5:04 p.m. by Mary Jo DiLonardo

The passages are lined with stalagmites and stalactites.

November 13, 2017, 1:30 p.m. by Michael d'Estries

The Grand Canyon Trust is spearheading efforts to restore watering holes critical to desert species.

November 2, 2017, 5:04 a.m. by Bryan Nelson

Sand and gravel are the most commonly extracted resources worldwide.

September 14, 2017, 7:53 a.m. by Mary Jo DiLonardo

Volunteers are eager to get boots on the ground after wildfires devastated their natural treasure.

April 5, 2017, 11:39 a.m. by Angela Nelson

From huge pink diamonds to glittering topaz to a giant pearl, these massive gemstones have fascinating histories.

March 7, 2017, 7:16 a.m. by Michael d'Estries

Carpenter Thomas Bena goes behind the scenes to explore the growing trend of 'trophy homes' and 'starter castles.'

December 20, 2016, 8:15 a.m. by Russell McLendon

U.S. landowners voluntarily protect more land (and water) than all national parks in the lower 48 states, a new census shows.

December 5, 2016, 12:15 p.m. by Mary Jo DiLonardo

Activists relish the victory, but many of them still aren't leaving.