It completely and TOTALLY blows away the BS climate change argument when you consider NO HUMAN IMPACTS thousands of years ago. Impacts are mega volcanic eruptions like Tobu in Indonesia which exploded 70,000 years ago and created last Ice Age.
Look at the depth of these freshwater lakes that melted in their tracks as the planet warmed. These glaciers moved southward over thousands of years. THAT is climate change people
https://www.worldatlas.com/lakes/the-great-lakes-by-depth.html