How much space do you need? Despite being low on the population density list, Americans tend to take up a lot of space. In fact, the Sierra Club reports that an American's average "ecological footprint"—the space it takes to produce the resources he or she uses—is four times the world's average. Some people are trying to combat this by living small. Really small.
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- Happening Now
Explore nine decades of The Walt Disney Company's history and artifacts.
Take a thrilling underwater journey to explore the beauty and mysteries of coral reefs.
- Coming Soon
Travel to some very wild places and explore the extremes of Earth's eco-zones.
Tim Samuelson and Lisa M. Snyder present a virtual tour of the 1893 Columbian Exposition.
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