The Mid-Atlantic is home to many orchards with some very special trees -- American Chestnuts. Chestnuts were nearly wiped out in the 20th century by an exotic fungus. The new trees are being bred to resist the disease. So-called "citizen scientists" carry out the breeding program and Cynthia Berger visited a local orchard to find out how it works.
Stories: American Chestnut Foundation
June 22, 2007