Mary Dell Chilton

Mary-Dell Chilton pioneered the field of genetic engineering in agriculture.

She has spent most of her decades-long career working for Syngenta, where she founded the agribusiness company's research on genetically modified seeds.

But Chilton started out in academia. And it was here in St. Louis, at Washington University, that she led the team that created the first genetically-modified plants in the early 1980s.