Agence France-Presse: Nico Strydom probably knows as much as anyone about jatropha, the poisonous tree whose oily black seeds just might sprout a green energy revolution. But, as the soft-spoken forester admits during a tour of his jatropha fields in central Mozambique, that’s not saying much. "There’s a lot of research that needs to be done. Jatropha is a relatively new plant," says Strydom. He looks out over the 10-month-old, 1,000-hectare farm he runs for Sun Biofuels, a British-based …