Across the corn belt, farmers are pulling out all the stops in their war on the corn rootworm. They're returning to chemical pesticides, because the weapons of biotechnology ? inserted genes that are supposed to kill the rootworm ? aren't working so well anymore.
Source: http://www.npr.org/blogs/thesalt/2013/07/09/198051447/as-biotech-seed-falters-insecticide-use-surges-in-corn-belt?ft=1&f=1007
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