Refocus from CO2 to PM2.5. In the process explain that particular matter of 2.5 has been linked to the diabetes epidemic and is actual air pollution that people are breathing in. Whereas CO2 has resulted in greening the earth and allowing us to produce more food.
Don't declare war on the climate hoaxers directly. You'll just harden both enviro freaks and even the ill informed but legitimately concerned.
But do educate as you shift the focus. That way you're still concerned about the environment, you're just taking us in a better direction.
Well said. In other words be smarter in how we deal with these people.