Tyrone Hayes studies frogs and amphibians — and the effects on their bodies of common farming chemicals.

Why you should listen

At the University of California, Berkeley, and in ponds around the world, professor Tyrone Hayes studies frogs and other amphibians. He's become an active critic of the farm chemical atrazine, which he's found to interfere with the development of amphibians' endocrine systems.

Hayes is the subject of the chidren's book The Frog Scientist, and lectures frequently. His work was recently covered in Mother Jones.

Tyrone Hayes’ TED talk