During the last ice age, the Great Lakes were formed and filled with melted water when the mile thick ice sheet melted due to climate change. Can anyone explain what did man do to cause this climate change? Did he drive gas guzzling SUVs? Did he burn hydrocarbons to stay warm? What did man do? Or, or was it something else which man had no control over? MMMMMMM, what could it have been?
Uhh, maybe mastodon farts.