The Goldilocks Planet - Jan (Senior Lecturer in Geology Zalasiewicz - Bog

In the struggle to cope with climate change, what lessons can be learnt from Earth's long history? Two leading geologists explain the important insights science is now able to give us about dramatic changes in Earth's distant past, and the delicate balance that ensures our planet is 'not too hot, not too cold', but 'just right' to sustain life.