Using the prize money he earned by winning the 2006 California spelling bee, Adarsha Shivakumar and his younger sister, Apoorva Rangan, started Project Jatropha (at ages 14 and 12, respectively) to promote the plant Jatropha curcas as an ecologically friendly and economically profitable crop among the farmers of rural South India. Through outreach and education, they hope to spearhead a movement to reduce CO2 emissions and decrease the reliance on fossil fuels by promoting the cleaner-burning biofuel produced from the Jatropha seed.