Gracie the border collie brings a special skill set to Glacier National Park: keeping the wildlife living in the park safe from their visitors.
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.
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.
The United States is sending firefighters and wildfire specialists to Australia to help fight the fires that have already consumed millions of hectares.
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.
Over the past few decades, Los Angeles has learned techniques to improve air quality that could benefit other major cities around the world.
Money doesn’t grow on trees, but timber thievery is thriving. Every year, swaths of forest the size of Panama are cut down. Some of...
Find out what makes the largest city in the United States one of the world's greenest, most environmentally friendly cities.
With the largest fleet of natural gas buses in the U.S. — about 2,200 — Los Angeles has become a leader in cutting carbon emissions.