Join Expedition Blue Planet: North America, a five-month interactive exploration of critical water issues, as they roll across the U.S., Canada and Mexico.
A statement of sustainability from the National Geographic Society.
Freshwater Hero - Pete McBride
See how much you don't know about energy use and energy sources with this quiz from National Geographic.
Freshwater Hero - Zeb Hogan
Learn about the water consumed to make everyday products.
Natural Disasters --Tornado Pictures -- National Geographic
Sustainability at National Geographic
Greendex: Consumer Choice and the Environment - A Worldwide Tracking Survey
Habitat for Humanity of Washington, D.C. is a grantee of the Great Energy Challenge initiative.