It's a heretical position to take against popular opinion and beliefs that adding CO2 to the atmosphere does not and will not cause warming, but the evidence is by no means absolute.
http://www.petitionproject.org
I care about the Swedish teenager because she's been nominated for the Nobel prize and has dominated popular opinions this year. Daniil Gorbatenko wrote a good piece on her, I found a link to that here https://fee.org/articles/the-real-problem-with-greta-thunber...