The story about wolves, elk, and the Yellowstone ecosystem has been told and retold by U.S. news media. The gist is that the reintroduction of wolves restored balance in overgrown elk populations -- which in turn allowed restoration of aspen groves which the elk had been overbrowsing. But new evidence suggests the story isn't really true -- or that a true understanding of the ecosystem is far more complex. That in turn raises issues about how U.S. news media cover the environment.

Arthur Middleton reports for the New York Times March 9, 2014. [2]