How do I prove to him that it isn't?

All my evidence to seem seems to have counter evidence that he believes in.

Is there another framework I can use besides providing him with evidence that can help me convince him?

I thought of using the "Precautionary Principle"[0]

What other frame works do you have that can help me convince him that climate change is real?

[0]: https://en.m.wikipedia.org/wiki/Precautionary_principle