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.

The beaver faces the camera. Its tail extends to the right and is cocked on its side, making the paddle-shape more visible.

Building It Back – Beaver Reintroductions Across the World

Katarina Samurović

Since the 1920s, beavers have been artificially re-introduced to many habitats across their former range.

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