Looking for more information on this, I found the following page:

https://www.science.org.au/curious/e...enhouse-effect

Intended as a layman's introduction to global warming, it says that only 1% of
the Earth's atmosphere consists of natural greenhouse gases.

In that case, *argon* must be a greenhouse gas, and clearly carbon dioxide
emissions aren't enough to make a difference.

So global warming supporters can at least make typos sometimes...

John Savard