r/climatechange • u/srmcmahon • 5d ago

"retired plant scientist" claim

This was in a letter to the editor locally:

"There is no real evidence that global warming is due to atmospheric CO2. Controlled experiments indicate that the addition of CO2 in air up to 10,000 ppm have little or no effect on warming under atmospheric conditions."

Entire letter is here: https://www.inforum.com/opinion/letters/letter-co2-and-global-warming

I was going to write a comment. I think he might be talking about experiments where they added CO2 to experimental plant plots (but don't remember the mechanics). "Under atmospheric conditions"--means exactly what?

Can you help me out here? I have not figured out how to phrase a search that brings me to what he is referring to.

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u/another_lousy_hack 4d ago

tl;dr: Unqualified non-expert relying on tired old denier tropes. Don't waste your time trying to reason people out of a position they didn't reason themselves into.

Honestly, anyone accepting that bullshit is already convinced climate change isn't real. Or that it's a Chinese conspiracy. Or NASA is faking it. Or whatever it is that stupid people tell themselves in order to feel smarter than actual scientists.