>(00:12:30) The climatic record in these deep sea cores tells us that there have been eight ice ages in the last 700,000 years. It also tells us when they have

>(00:12:30) The climatic record in these deep sea cores tells us that there have been eight ice ages in the last 700,000 years. It also tells us when they have occurred. This provides us with a test of various theories of the ice ages. We now have a theory that tells us that changes in the shape of the Earth's orbit act as a pacemaker for the ice age succession. Since this theory can precisely predict when ice ages occured in the past, it also can predict when ice ages will occur in the future. From this theory we can say with confidence that we are currently heading towards another ice age. Dr. James D. Hays https://websites.pmc.ucsc.edu/~pkoch/EART_206/09-0303/Hays%20et%2076%20Science%20194-1121.pdf https://websites.pmc.ucsc.edu/~pkoch/EART_206/09-0303/Hays%2...