This is part 4 of 5

Global Warming: What You Need to Know, with Tom Brokaw

More about this show here:
Global Warming-Brokaw (preview)
http://www.dailymotion.com/video/x16elp_global-warming-brokaw-preview

Global Warming - Brokaw 1 of 5
http://www.dailymotion.com/video/x16i8g_global-warming-brokaw-1-of-5
Global Warming - Brokaw 2 of 5
http://www.dailymotion.com/video/x16igo_globalwarmingbrokaw-2-of-5
Global Warming - Brokaw 3 of 5
http://www.dailymotion.com/video/x16is0_globalwarming-brokaw-3-of-5
Global Warming - Brokaw 4 of 5
http://www.dailymotion.com/video/x16ix1_globalwarmingbrokaw-4-of-5
Global Warming - Brokaw 5 of 5
http://www.dailymotion.com/video/x16j1e_global-warming-brokaw-5-of-5