Berkeley scientist speaks at MU about atrazine's effect on frogs

Wednesday, October 12, 2011 | 5:48 p.m. CDT; updated 4:29 p.m. CDT, Monday, October 17, 2011

COLUMBIA — When biologist Tyrone Hayes published a breakthrough paper linking the common herbicide atrazine to sexual changes in frogs, his mother didn't know if his accomplishment was a big deal.