John Giesy
John Paul Giesy Jr. (born 1948) is an American ecotoxicologist. He is a Emeritus Distinguished Professor and former Canada Research Chair in Environmental Toxicology at the University of Saskatchewan. Giesy was credited with being the first scientist to discover toxic per- and poly-fluoroalkyl [PFAS] chemicals in the environment. His discoveries also include the photo-enhanced toxicity and the presence of perfluorinated chemicals in the environment. Provided by WikipediaPlease enable Javascript.
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