Not every conversation with a climate denier has to lead to raised voices and hurt feelings.  So go ahead and engage with the uncle who insists that the weather has always been changing and it has nothing to do with us. Or the in-law who can’t make up her mind about anything — whether global warming is real or not, whether it’s serious or not, or whether it’s human-caused or not.

The have some interesting and useful advice to guide you, find it here