Tobacco defenders  and  Climate deniers !!!!

There is a confirmation among scientists to attune of 95% certainty that tobacco smoking is harmful to health, so dittos the case of human provoked climate changes.

Tell them that tobacco smoking is dangerous to health or that smokers are liable to die young, they will not agree because they are tobacco defenders. In the same spirit, tell them that climate change is anthropogenically induced or that GHG and deforestation inter alia are linked to global warming, ozone layer depletion, sea level rise, flooding etc. They will not agree because they are climate deniers. They are therefore ontological specimens of the same plume who invariably congregates to the closest proximity (Birds of the same feather who flock together).

The similarities between the schools are that both acts are harmful, lives are involved, both can be mitigated or stopped with determination and sacrifice, and that both have economic nexus among others.

Source http://bigstory.ap.org/article/what-95-certainty-warming-means-scientists

The differences between them are that while tobacco smoking is a self-inflicted harm, anthropogenic climate change will result into humanitarian crisis. The former is a personal suicide as the latter is tantamount to homicide, genocide, or even holocaust. A 95% gold standard affirmation is rational enough to serve as a deterrent from smoking and a warning against unsustainable development.