EPA Reauthorizes Bt Corn

The U.S. Environmental Protection Agency announced on Oct. 16 that it had reauthorized commercial planting of genetically modified corn varieties transformed with genes from the bacterium Bacillus thuringiensis. Bt corn, as it's known, makes toxic Cry proteins lethal to caterpillars of the European corn borer and other damaging insects.1 The proteins are harmless to humans. As a result of EPA's action, seed companies can now market the products for another seven years, depending on compliance wi

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EPA reached its decision after a year-long review of the crops. According to spokesperson David Deegan, the agency relied in part on advice from scientists asked to examine the matter. The scientific advisory panel, or SAP, reviewed risks and benefits of Bt corn, first planted in 1996. Says Stephen L. Johnson, assistant administrator of EPA's Office of Prevention, Pesticides, and Toxic Substances, "Bt corn has been evaluated thoroughly, ¼ and we are confident that it does not pose risks to human health or to the environment. Consumers should be assured that these corn varieties show no signs of any adverse effects to human health."

By its action EPA also extended the reach of genetically modified corn by okaying a new variety called Herculex, developed and marketed by Pioneer HiBred of Des Moines, Iowa, in collaboration with Indianapolis-based Dow AgroSciences. The agency approved the new seed, which contains a gene called ...

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