The Norwegian Glacier Museum claims an incredible climate sensitivity of 8°C per 100 PPM CO2, or 1°C per 10 PPM CO2.
Through burning of coal and petroleum products mankind has increased the amount of carbon dioxide as much as the natural difference between ice ages and interglacials, which is the equivalent to 8 °C.
Glaciers and climate — The Norwegian Glacier Museum
Yet their graph shows a climate sensitivity of zero. As CO2 has risen 100 PPM over the past century (red line), there has been no corresponding increase in temperature (blue line. )
The lack of correlation over the past century shows that changes in CO2 have historically been a response to temperature changes, not the cause of them. An entire field of science is based around a fundamental inability to read graphs and think logically.