Black-and-white dog overlooking bighorn sheep in mountain meadow (NPS/A.W. Biel)

‘Bark ranger’ helps park rangers keep animals and people safe

Gracie the border collie brings a special skill set to Glacier National Park: keeping the wildlife living in the park safe from their visitors.

Do you know the world’s most trafficked mammal?

Although not well-known, all eight species of pangolins are threatened by wildlife traffickers who falsely sell the animals' scales as medicine.
Wildflowers on mountainside (NPS/James Pfeiffenberger)

Five national parks to visit virtually

Can't travel to these five national parks right now? Through a National Park Service partnership with Google, anyone can enjoy nature from their home.
Aircraft dropping red substance on fire (© Noah Berger/AP Images)

U.S. sends firefighters to Australia to help fight blazes

The United States is sending firefighters and wildfire specialists to Australia to help fight the fires that have already consumed millions of hectares.

Simple facts of climate change

Climate scientists are in nearly unanimous agreement that the Earth’s atmosphere is getting warmer and will affect the way people around the world live.

Save our oceans (and score a free poster)

The ocean ecosystem regulates climate, produces oxygen, and feeds about three billion people. But our oceans may not be able to provide these benefits much longer.

Once smog-shrouded, LA has improved its air quality

Over the past few decades, Los Angeles has learned techniques to improve air quality that could benefit other major cities around the world.
Two people fishing, silhouetted against sky (© AP Images)

How to stop ocean warming

The ocean has absorbed 93 percent of the heat from global warming since the 1970s, scientists conclude in a new report that calls for worldwide action.
Aerial view of an island with buildings on it (National Park Service/Frank Schmidt)

Welcome to Alcatraz: One of the largest microgrids in the United...

The San Francisco Bay island of Alcatraz, formerly a high-security prison, is now a tourist destination with its own renewable-energy system.