scientists all agreed the earth was flat, sun revolved around the earth, planets speeded up and slowed down in orbit, air was the cause of disease etc. etc. Those beliefs and many others were vehemently supported by most of the scientists of the day until somebody came along and proved them wrong.
yesterday a guy was lecturing me on how the fact that Spain was green around 1600 and dry now is somehow related to human induced climate change. His pontification ceased when I told him about the little ice age in Europe around the time Spain was green. Nevertheless he still claimed 97% of scientists agree with human caused climate change. And that somehow makes it correct.