Business Green: It may be bad for your health, but it appears that tobacco might yet prove good for the environment. Researchers at Thomas Jefferson University’s Biotechnology Foundation Laboratories in the US have genetically engineered the plant’s leaves to create a biofuel that they claim is more efficient than biofuels made from any other agricultural crop. “Tobacco is very attractive as a biofuel because the idea is to use plants that are not used in food production,” said Dr Vyacheslav …