Frogs: The Thin Green Line
Video: Agriculture's Effect on Frogs

Tyrone 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.

Get the Flash Player to see the wordTube Media Player.
  • JERRY CARTER JR.

    IT IS THE FROGS,ANTS,BEES=EVERYTHING ON THIS EARTH HAS A SIGNIFICANT REASON FOR BEING=OTHERWISE (GOD”)WOULD NOT HAVE INVOLVED THEM IN HIS CREATIONS

  • Tanner

    View reports of malformed frogs and report amphibian malformations at the North American Reporting Center for Amphibian Malformations, http://www.nbii.gov/narcam.

  • Malcolm

    Tried to watch this program on WFYI on April 5. There was no narration at all. Music and frog sounds but no human speech.

  • tyrone hayes

    You can support the ban on atrazine by writing to Congress:
    Keith Ellison MN05EllisonKeith@mail.house.gov
    A form letter is available at http://atrazinelovers.com/a2.html
    Every email counts and moves us in a forward direction to protect wildlife and human health.

  • Abbi Allan

    I’m so glad that there are people talking about this issue. This has been the content of my artwork & biology research since 1998…. Endocrine mimicking chemicals are really scary. Read the book “Our Stolen Future” http://www.ourstolenfuture.org/ This is the book that changed my life.

  • Illyana Rivera

    Thank you for this very informational video im in 7th grade and had to watch it for a project and I learned SOOOO much!!! THANK YOU!!!! :D

  • Cristhian Montoya

    I also had to watch this for my class. Really strange that only a small dose of Atrazine actually turns a male frog into a Female frog.

Produced by THIRTEEN    ©2014 THIRTEEN Productions LLC. All rights reserved.

PBS is a 501(c)(3) not-for-profit organization.