Stars of screen and stage throw their weight behind environmental issues large and small.
It used to be wet or not, warm or cool. Now California is looking at a future of dry and hot.
The Patagonian mara might be the closest thing to a Jackalope.
A gust of wind, a tragic death, and a reminder to treasure what we have.
You could say that progress on an international climate change agreement has been glacial, except that glaciers have been melting faster.
"This place would look a lot nicer covered with oil rigs instead of caribou"—said no one ever.
Hundreds of thousands of coal workers are losing their jobs. Labor and enviros together can bring about a just transition for them and their communities.
If you're worried about bird mortality, talk to your cat.
Sierra Club Foundation Director Peter Martin lined up among thousands of competitors at the annual Boston Marathon, to run for a cause that’s close to his heart.