clockTime to watch: 05:52Posted on September 23, 2014

Billy Lasley

Rolex Laureate, 1978

Billy Lee Lasley’s invention of a non-invasive method for determining the sex of birds — designed to help protect endangered species such as eagles — has slowly been adopted by researchers around the world. Perhaps more importantly, his work has proved to have other uses, including monitoring the reproductive health of women exposed to chemicals in the environment.

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