How Ice Ages Work

Believe it or not, we live in an ice age. The polar glaciers give it away. Those glaciers used to come clear down to New York. We now know the traces they left are everywhere if you know what to look for; it just took some Swiss peasants to figure it out. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.