Biology teachers around the world commonly introduce their students to the concept of 'trophic cascades' with an example from Yellowstone National Park in the United States.

After nearly three decades of celebrating the reintroduction of wolves to Yellowstone, scientists now question the extent of their impact on the ecosystem. A new study challenges…

Biology teachers around the world commonly introduce their students to the concept of 'trophic cascades' with an example from Yellowstone National Park in the United States.