Environmental economist says invasive species is part of the price of doing business

When the sun rides low on the horizon and winter chills wrap us all in down and fleece, global trade brings blueberries from South America, oranges from Israel. But trade in exotic goods also comes with significant local economic costs, explains Charles Perrings, professor of environmental economics at Arizona State University.

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<p><a href="http://www.physorg.com/news153832653.html">Environmental economist says invasive species is part of the price of doing business</a></p> <p>When the sun rides low on the horizon and winter chills wrap us all in down and fleece, global trade brings blueberries from South America, oranges from Israel. But trade in exotic goods also comes with significant local economic costs, explains Charles Perrings, professor of environmental economics at Arizona State University.</p>