‘From Silent Spring to Silent Night: The Impact of Modern Day Pesticides

Developmental endocrinologist Tyrone Hayes of the University of California, Berkeley, studies the role that steroid hormones play in amphibian development and has earned an international reputation for his research with frogs. His studies have environmental implications and are of potential benefit to human health. View a video of Hayes doing fieldwork as a National Geographic grantee in Africa:
http://www.nationalgeographic.com/outthere/grantees.html