A new synthesis and public-information program starting up at Cornell University will examine the environmental risk factors -- including exposure to chemical pesticides -- for breast cancer in women of New York and the United States. Prompted by concern from U.S. Sen. Alfonse D'Amato (R-N.Y.) about higher-than-average "clusters" of breast cancer in some regions of the state, the Cornell program will interpret and disseminate research information on both the established and suspected risk factors for the disease.