Expert Voices

The Wilderness Act Turns 50

wilderness act, grizzly bears, protections
More than 70 million acres of currently unprotected roadless areas provide critical habitat for more than 1,600 endangered, threatened, or sensitive species of plants and animals.
(Image credit: Photo by Jeff Burrell © WCS.)

John Weaver, senior conservation scientist for the Wildlife Conservation Society, has conducted field research in many wild areas across western North America over the past 45 years. This article was originally published on NationalGeographic.com. He contributed this article to Live Science's Expert Voices: Op-Ed & Insights.

The grizzly bear turned quickly, and I stopped.

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