Bloomberg: Oil prices have fallen by more than half since July. Just five years ago, such a plunge in fossil fuels would have put the renewable-energy industry on bankruptcy watch. Today: Meh. Here are seven reasons why humanitys transition to cleaner energy wont be sidetracked by cheap oil. 1. The Sun Doesn't Compete With Oil Oil is for cars; renewables are for electricity. The two dont really compete. Oil is just too expensive to power the grid, even with prices well below $50 a barrel. Instead, solar...