Support WBURHow A Biofuel Dream Called Jatropha Came Crashing DownPlay04:53Download AudioDan CharlesAugust 21, 2012 ShareA man harvests fruits of the Jatropha tree in Taabo, Ivory Coast. Jatropha, which is grown in many parts of the world, has fallen from favor as a diesel fuel substitute. (AFP/Getty Images)