New Fields For Food

Published: Jan. 29, 2014, 2:03 p.m.

Mary-Dell Chilton's DNA discoveries launched the field of genetically modifying plants to ward off pests, use less water, and improve yields. Supporters say it could help feed the world. Opponents say it's not safe, threatening the environment and people in ways that may not be known yet. By discovering the mechanism of DNA transfer, Chilton bestowed that power to humans.