Seneca Nation historian and "bioneer" John Mohawk, co-director of the Âé¶¹´«Ã½o Center for the Americas, is up to his knees in heirloom corn. He is a staunch advocate of the slow-food movement, a worldwide effort to safeguard and promote the use of traditional, unprocessed foods that digest very slowly, which means they are a lot better for you than the foods that populate the average American diet.