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NATURE | Frogs: The Thin Green Line | Chemical Runoff | P...

See the full episode at http://video.pbs.org/video/1117923308Tyrone Hayes and his students from the University of California at Berkeley are studying how agricultural chemicals, including fertilizers and pesticides, are affecting the health of frogs. Pesticides in runoff can cause an increase in stress hormones and lead to immunosuppression in frogs. In some cases Hayes has found that the presence of atrazine, a common agricultural chemical, can even cause frogs that are genetically male to develop as females and produce eggs."Frogs: The Thin Green Line" aired on PBS Sunday, April 18, 2010 at 8 pm as part of the 28th season of the Peabody and Emmy award-winning series produced by Thirteen in association with WNET.ORG for PBS. Major support provided by Canon U.S.A. Inc. For more information, visit http://www.pbs.org/wnet/nature/episodes/frogs-the-thin-green-line/introduction/4763/
Length: 06:36

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