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Once nearly extinct in the East, beaver populations are booming.  Their comeback, however, is creating complications for storm water pollution control systems, which beavers love to dam up.

<p>Once nearly extinct in the East, beaver populations are booming.&nbsp; Their comeback, however, is creating complications for storm water pollution control systems, which beavers love to dam up.</p>

The Environment in Focus, hosted by Tom Pelton, is a weekly perspective on the issues and people changing our natural world.  Pelton is a national award-winning environmental journalist, author, and public radio host.

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