Whenever I see smart geeks talking about tons of CO2, I always wonder what percentage of them know whether the Arrhenius effect (temperature forcing as a function of CO2 concentration) is exponential, linear, or logarithmic.<p>Answer here: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Svante_Arrhenius#Greenhouse_effect" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Svante_Arrhenius#Greenhouse_ef...</a>