Natural cycles

The existence of natural climate and temperature cycles are always the excuse that we can't or shouldn't do anything about CO² waste emitted into the atmosphere. But do know-nothing Republicans want to turn back the clock this far?

"We find that CO2 is about 30% higher than at any time, and methane 130% higher than at any time; and the rates of increase are absolutely exceptional: for CO2, 200 times faster than at any time in the last 650,000 years."