the middle "women" on the second clip looks like carrot top if he had a sex change . Lyle you're a nieve idiot. We obviously caused the multiple ice ages before we were a species. They are waiting to find prehistoric cars that we drove as apes to prove it. Of course giant volcanic eruptions that emit far higher levels of co2 in a higher concentration couldn't of done that because its not like at somepoint in the mid 1800's an eruption from a volcano gave the world a year round winter.