If you want evidence of widespread upheaval, just look at California's weather data over the past few decades. It's consistently gotten hotter and dryer, causing more and more fires that are killing hundreds of people per year and destroying entire towns. It's not about believing in climate change, it's about *understanding* it. It's very real.
https://www.gov.ca.gov/wp-content/uploads/2019/04/Wildfires-...