Call of The Wild Silenced 50 Years After the Wilderness Act Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email The Ansel Adams Wilderness is part of the millions of acres protected by the 1964 Wilderness Act. ( Tomas Tichy / Shutterstock.com ) Produced by Allie Ferguson Hosted by Todd Zwillich Produced by OPB, PRI and WNYC