In Oklahoma we don't discuss the fact of climate change in polite conversation. It is a waste of breath. People either already know it and agree with you or they are totally closed to anything that challenges their world view.
But consider this, the official high school graduate rate is 70%, but in reality those "transfers" are usually dropouts so it is closer to 50%. So 5 out of 10 people can't comprehend any scientific conversation you may want to have with them. But 5 can, so you try. Of those 5 maybe 2 have a natural curiosity that would allow them to explore new ideas. You also have to get through the filters of politics, religion, denial, distractions, etc.
So let's say you have ONE person out of 10 who is reachable, but did they ask you to educate them? At least students in my classes have paid for education so I can legally shower them but strangers on the street are less receptive.