It’s not all about carbon-dioxide. The earth is (or was) an self-stabilizing system More insolation leads to more evaporation of water, more clouds, more rain – and the overall system cools down. However, outside certain boundaries, the system is not self correcting and becomes unstable. For all we know the system will become unstable with unthinkable consequences, if the current overall temperature increases by more than 2 °C.
I am appalled by the comments and attitude of former colleagues, fellow geologists, geophysicists and other scientists. Based on their education, they should know better. Others have been lobbied and bribed to spread fake news.