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Published April 13, 2011, 12:00 AM


FILE - In this Sept. 1, 2010, file photo Dave Redell, a bat ecologist with the state Department of Natural Resources, stands near the steel bat cupola that covers the opening to the Neda mine near Horicon, Wis. Bats save American farmers at least $3.7 billion a year in pest-control costs by eating insects that feed on crops, a benefit that could be in jeopardy as a disease that has killed more than a million bats in the Northeast spreads to the Midwest. (AP Photo/The Capital Times, Michelle Stocker, File)
Read the article: Study: Bat disease may increase farm pesticide use