1896:

https://www.sciencehistory.org/distillations/magazine/future...

https://en.wikipedia.org/wiki/Svante_Arrhenius

"The effect may be considerable in a few centuries"

So optimistic! We F'ed up way before that!

They underestimated the ability of new media to manufacture consent.

I guess we could call it rather comedy than tragedy that there are still powerful people on this world who deny this in 2022.

In general I hope there'll be more attention to the reasons why they deny this: not because they don't believe it, but because it is in their interest to deny since "business as usual" is where they thrive.

Your superficial, what-about, reactionary response is a perfect display of how to ignore problems and go extinct over it.