The shark fin industry is worth billions of dollars every year. How can shark lovers compete against that kind of capital?
Brazil's environmental laws have come a long way since the 1980's. But that doesn't mean the Amazon is well-protected.
It's no secret that the world's corals are threatened by warm, acidic oceans. Are subsistence fishermen part of the problem, or part of the solution?
What happens when you turn a trigger-happy photographer loose in Kenya's Masai Mara National Reserve? Call the outcome a slideshow or call it a video; most of all, call it spectacular.
Marine sanctuaries: like national parks, but wetter. Sage talks to the guy who's keeping them safe.
The Elwha Dam removal is the largest dam deconstruction project in American history. But the real story only begins when the concrete comes down.