Saturday, January 30, 2010 9pmPart 2: The Opportunities & Challenges of Life With Ice in the 21st CenturyProducer: CBC Radio OneListen AgainFor more than four billion years, ever since comets first crashed into the Earth, ice has been inextricably linked to life on this planet. From cold-hardy microbes to freeze-resistant frogs, nature has evolved many tricks for survival. Even human beings have learned to adapt to the challenges β and opportunities β of life with ice. Now, as glaciers shrink and ice vanishes from the polar seas, Richard Longley takes us back to our icy roots, rekindling wonder for this alluring frozen water.