Study on wildlife corridors shows how they work over time

At the Savannah River Site in South Carolina, there are five strange looking "patches" cleared out of the surrounding forest. No, they're not crop circles carved by aliens.

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<p><a href="http://www.physorg.com/news147374892.html">Study on wildlife corridors shows how they work over time</a></p> <p>At the Savannah River Site in South Carolina, there are five strange looking "patches" cleared out of the surrounding forest. No, they're not crop circles carved by aliens.</p>