AlertNet: The high amount of carbon that pours into the atmosphere when arid and semi-arid land is converted for Jatropha oil production may outweigh the environmental benefits of such a biofuel, says a new report. The findings run contrary to popular beliefs. As the world struggles to find ways to reduce greenhouse gas emissions to mitigate climate change many countries are embracing "clean-burning" biofuels as the renewable energy of choice. Biofuel crops planted in semi-arid landscapes are considered...