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"   Jeff Stetz West Glacier, Mont. Age: 37 Years on Job: 12     When Jeff Stetz was a kid, he wanted to be a pilot\u2014but a love of large animals turned him on to conservation instead. Now the 37-year-old studies the dynamics of threatened grizzly and black bear populations in the Northern Rockies. He practices noninvasive sampling, securing strands of fur from trees where bears scratch their backs, then sends the fur to a lab for DNA analysis. &amp;quot;We need to understand how our actions impact wildlife populations,&amp;quot; Stetz says. &amp;quot;Grizzlies are a true symbol of the wild and a huge part of America&amp;#039;s culture. Failing to ensure their persistence would be unforgivable.&amp;quot;   id=&amp;quot;myjob1006&amp;quot; align=&amp;quot;middle&amp;quot;&amp;amp;gt; name=&amp;quot;myjob1006&amp;quot; align=&amp;quot;middle&amp;quot; allowScriptAccess=&amp;quot;sameDomain&amp;quot; type=&amp;quot;application/x-shockwave-flash&amp;quot; pluginspage=&amp;quot;http://www.macromedia.com/go/getflashplayer&amp;quot; /&amp;amp;gt; (Photograph by Andrew Geiger) "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/adventure/a6081/grizzly-dna-tracker-this-is-my-job/>