A company that sold and distributed seed corn containing an unregistered genetically engineered pesticide has agreed to pay a $1.5 million penalty to the U.S. Environmental Protection Agency. The settlement between the EPA and Syngenta Seeds Inc. was filed Thursday with the Environmental Appeals Board, which must still approve the penalty, the EPA said in a news release. Syngenta voluntarily disclosed in 2004 that it may have unintentionally distributed the genetically modified corn, called Bt10, to the United States, Europe and South America.