See photos of Freshwater Conflict in this freshwater photo gallery from National Geographic.
A statement of sustainability from the National Geographic Society.
Hooked on fossil fuels, humans pump carbon dioxide into the atmosphere.
Freshwater Hero - Pete McBride
See how much you don't know about energy use and energy sources with this quiz from National Geographic.
Learn about the energy challenges we face in the future by calculating your carbon footprint, taking quizzes, and more.
Calculate your carbon footprint from the energy you use, including car travel, air travel, home energy, and renewable energy.
Freshwater Hero - Zeb Hogan
See photos of freshwater mammals, such as manatees, hippos, otters, and more, in this photo gallery from National Geographic.
Learn about the water consumed to make everyday products.
The Innovators Project
Meet some of science's most important movers and shakers—from past and present.
How to Feed Our Growing Planet
National Geographic explores how we can feed the growing population without overwhelming the planet in our food series.