I'm curious about this sort of advertising campaign. In a way, both of these pictures are powerful and will potentially stick with a person, but can they really evoke change in a person's behavior?
Take this one on the left. Sure, it could be argued that smoking is a slow suicide, as is any action a person takes that is not health-conscious: overeating, eating the wrong things, drinking, or a sedentary lifestyle; but are guilt, fear and antagonism really the way to help people make better decisions?
I agree that smoking is dangerous and that environmental responsibility is a good thing, but all these ads do is piss me off. If I were pro-smoking or thought global warming a myth, these appeals would not change my mind but help me to disregard the opposition as extreme and illogical.