See National Geographic's full coverage of the 2010 Gulf of Mexico oil spill: pictures, news reports, and first-person accounts.
Burning fossil fuels, humans pump CO2 into the atmosphere. Fortunately, plants and ocean waters gather it in. But what if this great recycling system went awry?
See the effects global warming has had on Antarctic glaciers and the wildlife that depends on them.
Learn more about these underground reservoirs of steam and hot water that can be tapped to generate electricity or to heat and cool buildings directly.
