"Don’t know about you but I refuse to engage with climate deniers. Life is too short to waste my time on them. That’s not to say that some climate deniers are not very influential politically and in business circles but Rupert and Gina and their friends don’t frequent my haunts very often. That all said, it is useful to be well acquainted with the more common concerns people express about climate change and be able to respond to them: How can there be global warming when there’s a snowstorm? Scientists can’t even predict tomorrow’s weather, much less the climate in 100 years. How do we know humans are to blame? Carbon dioxide is good for plants. What about the economy and jobs? etc. etc. To help you, the Climate Reality Project has produced a useful guide: ‘The 12 questions every climate activist hears and what to say’.
You can see some of the deniers’ points being made in Craig Reucassel’s short video about Australians’ views on climate change'.