The ocean floor is a treasure trove of valuable minerals and metals, and the first deep-sea mine could begin operations as soon as 2017, but the environmental risks aren’t fully known.
Mongolia boasts one of the world’s fastest-growing economies, thanks in part to a booming copper and gold mine. But it has struggled to live up to its promises of world-class environmental standards.
What's the price of gasoline? In the U.S. it's about $4 a gallon. But some experts say the true price of gas is much higher. What about the costs of pollution, and the global and local problems caused by it? Who pays for those? This animated feature from the Center for Investigative Reporting calculates the