Iain Stewart meets geologists who try to predict how future ice ages will develop and affect the landscape. They do this by studying the sea bed around the British Isles where evidence of previous ice ages has been best preserved. Climate scientists featured predict the next ice age will be in forty to fifty thousand years.
Discuss Quaternary climate change and the idea of natural rhythms in the Earth's climate. Relate this to ideas of current climate change and recent historical examples, such as the little ice age. Have students predict the changes to human activity that different changes in temperature would bring about.