Agence France-Presse: To its fans, jatropha is a miracle crop, an eco-friendly answer to India’s growing energy needs, but some experts are starting to question whether the wonder-shrub is too good to be true. The seeds of the wild plant, which grows abundantly across India, produce non-edible oil that can be blended with diesel to make the biofuel that is part of government efforts to cut carbon emissions and combat climate change. That, combined with the shrub’s much vaunted ability to flourish on …