Great way to desensitize people. Even if official "global warming" information twists the truth, it still makes some people stop in their tracks and pay attention to what is going on globally. With such ads (and this campaign might very well find it's imitators) PTB make sure that people stay asleep and will be fleeced on a continual basis till the VERY END...
"This is the way I think the world will end — with general giggling by all the witty heads, who think it is a joke." Søren Kierkegaard