Explorers discover massive cave system under Montreal
December 4, 2017, 5:04 p.m. by Mary Jo DiLonardo
The passages are lined with stalagmites and stalactites.
Volunteers help bring life back to Grand Canyon springs
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.
Everyone wants to help rebuild Columbia River Gorge (but it's not time yet)
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.
'One Big Home' profiles America's obsession with supersized dwellings
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.'
Americans are quietly preserving 56 million acres of private land
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.
Standing Rock protesters celebrate as pipeline is halted
December 5, 2016, 12:15 p.m. by Mary Jo DiLonardo
Activists relish the victory, but many of them still aren't leaving.
'Super mom' spotted on a Minnesota lake — with 56 ducklings in tow
Parallel worlds exist and interact with our world, say physicists
Coyote finds old dog toy, acts like a puppy
Walk between the Smokies on North America's longest pedestrian suspension bridge
9 of the world's largest dog breeds
11 things humans do that dogs hate