The Smithsonian National Zoological Park in Washington, DC is sometimes called “the people’s zoo.” That’s because it’s the only zoo in the country to be created by an act of US Congress, and admission is free.

But why did our federal government create a national zoo in the first place?

Outside/In producer Felix Poon has the scoop – from its surprising origins in the near-extinction of bison, to a look at its modern-day mission of conservation, we’re going on a field trip to learn all about the National Zoo.

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