Yellowstone: Top Photos

Geysers, bison herds, and wild landscapes that teach kids the power of nature

American bison ♂ (Bison bison bison) in Yellowstone National Park, Wyoming, United States. Only a week after this photo was taken, President Obama signed the National Bison Legacy Act, officially mak
This bull was photographed one week before President Obama signed the National Bison Legacy Act, making the bison America's official national mammal. Yellowstone's herd of roughly 5,000 is the largest free-roaming bison population on public land in the country — and the reason this moment mattered enough to make it law. © Frank Schulenburg, CC BY-SA 4.0, via Wikimedia Commons

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