20,000 years ago 15,000 feet of ice sat atop NYC. That is settled science. Glacial striations on granite boulders in Central Park are proof. Now ask any CO2 activist this “Are you saying all that ice melted because cave men were driving Hummers?”
6,000 years ago North Africa was a wet, lush landscape and the Sahara Desert did not exist.
Did it turn into a sandy desert because the Egyptians built the pyramids using heavy diesel equipment?