Climate change is occurring, is caused largely by human activities, and poses significant risks for-and in many cases is already affecting-a broad range of huma

Despite the many benefits of energy, most of which are reflected in energy market prices, the production, distribution, and use of energy causes negative effect

The United States and China are the world's top two energy consumers and, as of 2010, the two largest economies. Consequently, they have a decisive role to play