May 24, 2019, 11:28 a.m. by Mary Jo DiLonardo
Hundreds of hikers battle altitude sickness and frostbite as they wait in line to summit.
Costa Rica has doubled its forest cover in the last 30 years
May 24, 2019, 8:26 a.m. by Mary Jo DiLonardo
Half the country's land surface is now covered with trees.
3 new Dark Sky Parks reveal wonders of the night sky
May 23, 2019, 1:15 p.m. by Angela Nelson
International Dark-Sky Association honors places that preserve unpolluted views of the sky.
How conservationists are saving Scotland's rainforests
May 22, 2019, 8:25 a.m. by Mary Jo DiLonardo
They're threatened by overgrazing and pollution, invasive species and industrialization.
Millions of people inhabit this 'hidden continent' that's 94% underwater
May 17, 2019, 8:26 a.m. by Russell McLendon
Scientists say Zealandia meets all the requirements to qualify as a continent, even though 94% of it is underwater.
Photos capture diversity of life on Earth while inspiring conservation
May 16, 2019, 10:48 a.m. by Mary Jo DiLonardo
The BigPicture photo contest winners offer striking images of the natural world.
The story behind kudzu, the vine that's still eating the South
May 15, 2019, 3:55 p.m. by Catie Leary
These surreal leafy figures may be fascinating, but their comical appearance belies a sobering ecological reality.
The secret to staying safe while hiking is preparation
May 15, 2019, 11:30 a.m. by Laura Moss
Whether you're planning to camp or just go for a simple hike, here are 10 things you need.
Global tree cover has increased 7% over the last 35 years — but there's a catch
May 13, 2019, 12:36 p.m. by Noel Kirkpatrick
There's still cause for concern, however.
How my son and I took our love of nature and turned it into a book
May 11, 2019, 9:32 a.m. by Stacy Tornio
Writer Stacy Tornio didn't think she'd get such an enthusiastic response from her son Jack about writing a book.
There's a tree in this North Carolina swamp that's at least 2,624 years old
May 10, 2019, 3:09 p.m. by Mary Jo DiLonardo
The bald cypress can be found along North Carolina's Black River in the Three Sisters Swamp.
Unhealthy air plagues our national parks, just like it plagues our cities
May 8, 2019, 2:35 p.m. by Matt Hickman
New report adds to concerns about air quality in what are supposed to be our most sacred places.