Watch on Demand < Back Now Playing NATURE: Bears of the Last Frontier Airdate: 2012-07-25 Visit the Web site > Join adventurer and bear biologist Chris Morgan on a year-long motorcycle odyssey deep into Alaska’s bear country to explore the resiliency and adaptability of these majestic animals as they struggle to make a living in five dramatically diverse Alaskan ecosystems: coastal, urban, mountain, tundra and pack ice.