I think its amazing that there are people out there that still deny climate change. GOP candidate for president, Donald Trump, has consistently denied global warming, claiming one time that the weather was fine! he also said it was a Chinese hoax! his rallies are packed with people who believe the same thing. denying what 99% of scientists confirm is not a historical precedent. We forget that people denied the earth was round. when someone challenged the concept of flat earth, they were persecuted by the church and by authorities at the time. it is completely normal to deny a phenomenon especially when people cant the effects of it right away.
almost every scientific discovery throughout history was denied, questioned, and scientists often risked their security (sometimes life) for what he or she believed in. Global warming is a inconvenience to say the least to many corporations who like the way it is at the moment.
by corporations I mean gas and oil sector, especially shale, manufacturing industry and coal. in fact, I would go beyond that, Global warming is a threat to the livelihood of these companies. so it is in their interest to promote people who deny it of heavily question it. but like every historical discovery, and especially one with this magnitude, everyone will come around eventually. the steps usually begin from flat out denying to persecution to accusation to partial belief and finally to accept it. notice that climate change deniers are usually over the age of 50 or 60. which is borderline selfish. global warming is an existential threat to the next generation, and older people must understand that if they want their grandchildren to inherit the same earth they did, they need to start making changes, and quickly.