Highly Recommended: Merchants of Doubt

If you doubt that smoking is bad for your health, I recommend Merchants of Doubt.
If you doubt that second hand smoke is bad for your health, I recommend Merchants of Doubt.
If you doubt the existence of acid rain, I recommend Merchants of Doubt.
If you have any doubts about the ozone hole, I recommend Merchants of Doubt.
If you think the tobacco companies doubted that second hand smoke is bad for your health, I recommend Merchants of Doubt.
If you think the banning of DDT was a bad thing, I recommend Merchants of Doubt.
If you think global warming is a hoax, I recommend Merchants of Doubt.