AdvertisementA Top Weedkiller Could Cause Cancer. Should We Be Scared?March 24, 2015Dan CharlesfacebookEmailCentral Illinois corn farmer Jerry McCulley refills his sprayer with the weedkiller glyphosate on a farm near Auburn, Ill. A new assessment of the chemical finds that the (uncertain) risks mainly affect the people who work with it or who come in direct contact with areas where it's applied. (AP)