In the fight against climate change, we have the scientists, the lawyers, the lobbyists. Now all we need is the mass movement. The man who's been leading the charge for the last 20 years tells us how to build one.
Invisible to most of us, dirt-poor miners in the Amazon Basin work with one o the world's most notorious toxins--mercury--to turn river mud into nuggets of precious metal.
When the glaciers melt, all that water has to go somewhere. In the mountain fastnesses of Nepal and Bhutan, it is forming thousands of new lakes -- with potentially catastrophic consequences.
Corporations are waking up to the realities of global warming for many reasons -- not least of which is pressure from stockholders. See how one group of investors is working to bring about change.
Think the debate about global warming is over? Well, think again. A little-known conservative group is convinced that the planet is cooling, and it has the science (and the hairstyles) to prove it.
Under Montana's Big Sky, newly arrived homeowners are on a collision course with a resurgent population of top predators. Many ranchers have figured out the path to peaceful coexistence, but will they manage to pass on their hard-earned wisdom to newcomers unaccustomed to the ways of the wild?
In Pittsburgh, a small organization called Global Links has devised an ingenious solution to the problem of waste in American hospitals: Rescue what we throw out, ship it overseas, and save lives.
At 12:30 in the morning of October 11, 2000, a mountain in eastern Kentucky burst open and let out a flood of mining waste bigger than the Exxon Valdez oil spill. Coal sludge damaged homes and killed everything in 20 miles of streams. Two years later, the land is green again but the bitterness remains.