The fallacy here is that there is something called "science" which is always right and there are stupid people - who also happen to be ugly and look ridiculous - who just cannot accept that science is ALWAYS right. But an educated person realizes that over the centuries what has passed for "science" has frequently been wrong.
The text could easily be replaced with this:-
15th Century. Diseases are spread by bad smells. There are always bad smells wherever there is disease. So you can protect yourself by placing sweet-smelling posies in your house. It's science!
16th Century. You can turn any metal into gold if you know how. Its science!
17th Century. All illnesses can be cured by bleeding people. You put leeches on their skin to suck the blood out. It's science!
18th Century. Electricity is the life-force. So if you get a dead body and pass an electric current through it, it will come back to life. It's science!
19th Century. Women and black people have inferior brains. It's science! Also if women ride bicycles or go to university, they will become sterile. It's science!
21st Century. The planet is getting warmer and it's our fault. Evidence to the contrary is "weather" not climate. Explanations based on anything other than human causes are "denial". Historical evidence that climate has always changed and does so even on other planets is "global warming denial".
What is really "science"? Only future generations will be able to decide that. And only if they are allowed freedom of opinion and expression to pursue enquiry without being insulted, stigmatized and subjected to hysteria.
Of course if you are, like Barack Obama or Bernie Sanders, looking for some way of shifting the blame for terrorist attacks away from the perpetrators, "global warming" provides a convenient scapegoat. Both of them have publicly claimed that global warming is to blame for violent jihadist attacks. No kidding. They truly have said that. It's science!!!