A tree burning in the North wildfire in Sequoia and Kings Canyon National Parks in 2004.

Causes of Wildfires in the United States

Caitlin Dempsey

Every year, thousands of wildfires rage across the United States, consuming millions of acres.

A brown wolf with yellow eyes stands in the snow in front of evergreen trees.

How Reintroducing Wolves Changed Yellowstone National Park

Mark Altaweel

Scientists have documented the trophic cascade effect of reintroducing wolves to Yellowstone National Park.

A geyser eruption with visitors standing on the boardwalk watching.

Geography Facts About Yellowstone National Park

Caitlin Dempsey

Learn some quick and fun geography facts about Yellowstone National Park.

A bison cow with her calf. Photo: Jesse Achtenberg, U.S. Fish and Wildlife Service. Public domain

Geography of American Bison

Caitlin Dempsey

Learn about the American Bison, which once roamed North America in large herds.

Book cover for Yellowstone Wolves

Review | Yellowstone Wolves: Science and Discovery in the World’s First National Park

G.T. Dempsey

This book is a collaborative effort to investigate the successes and failures of the re-introduction of wolves to Yellowstone National Park

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