Waking the Giant

Tuesday, October 24, 2006 - 17:00

Our planet is warming, and so far the change has been gradual.  But could the climate shift abruptly?  If so, what’s the trigger?   Ice cores in Greenland may provide clues.  These frozen time machines show that climate has radically changed in the past – and suggest possible reasons why.  Could it happen in our lifetime?

Also we consider the worst weather disaster that our planet ever suffered;  a deep cryogenic slumber in 600 million B.C..  Only the small and hearty survived.  Hear the latest theories of Snowball Earth and also what they suggest about the habitability of other planets.  Plus, as the Artic melts, an Inuit activist files the first international legal action against climate change. 


  • Richard Alley is a professor of Geoscientists at Penn State University and the author of “The Two-Mile Time Machine”
  • Sheila Watt-Cloutier – Canadian Inuit Activist and International Chair for Inuit Circumpolar Conference
  • Ramond Pierrehumbert – Geophysicist at the University of Chicago