Most scientists don’t have a good grasp of the big picture regarding global warming because they are narrowly specialized and don’t think about much outside of their immediate interests. The scientists that do have a grasp of the big picture can be divided into global warming advocates, skeptics and the majority of passive observers who play it safe by not taking a position. The global warming advocates have the upper hand and the most power. The skeptics, including quite a few excellent scientists, are marginalized and frankly persecuted. They are whistle blowers.