The tiny mountain pine beetle is destroying millions of acres of forests. It's the largest insect infestation in the history of North America. View

In northern British Columbia, a self-trained biologist is battling fish farms in hopes of saving the orca whale population. View

A vote in Alaska may affect the permitting of the Pebble prospect, which could become the largest mine in North America -- and threaten wild salmon. View

The issue of global warming is captured in a video created entirely by using 20,000 still images taken over 20 days. View

A Pulitzer Prize-winning five-part series on the crisis in the seas, caused by toxins, debris, acidity, bacteria and sewage. View

Chilling package of audio slideshows paints a grim commentary, in images and numbers, of poverty and inequity in Texas. View

After the largest tribal water settlement in U.S. history, some Pima are encouraging a return to traditional farming and foods for better health. View

A short narrated slideshow about the journey of water from the mountain tops of Idaho to thunderous falls in downtown Spokane, WA. View

Award-winning video unravels the mystery and explains the significance of the cold-blooded killings of nearly extinct African mountain gorillas. View

The Niger Delta is rich in oil, yet Nigerians living there are poorer than ever, violence is rampant, and the land and water are fouled. View