Nelly said it best. Temps have been rising dramatically since we started tracking it, and it will eventually lead to a massive extinction event. Specifically of climate change deniers, because it was so much easier to deny global warming in the 90s than it is today, now that people who were born in the 90s can vote and drink.
About 70% of Americans acknowledge climate change and think the Feds should do something about it. Boomers are the group with the highest percentage of deniers, while Millennials are getting louder on the topic due to the aforementioned voting (and probably the drinking too).