The "Ignorance" is all yours, Ned...not having a tech degree is no excuse...read on...
...Ice Ages and Thaws took place within the CO2 atmospheric concentrations of 180 - 300 ppm...within the last ~150 yrs we're now over 425 ppm...and rising rapidly...plus, it takes generations for the CO2 to come out of the atmosphere acidifying oceans...etc, etc.