By Dale DenwaltStaff writer ddenwalt@oklahoman.comThe evolutionary defenses of a fungus could help humans deal with another defense mechanism, the noxious odor of skunk spray. Robert H. Cichewicz and his Natural Products Discovery Group were hunting for a chemical to help treat breast cancer when they found a surprising molecule made by a fungus collected thousands of miles away. The molecule dubbed "pericosine" bonds with the odorous compounds sprayed by skunks and neutralizes the smell, Cichewicz said.Read more on NewsOK.com