This portion of video is the "preview" of:
Global Warming: What You Need to Know, with Tom Brokaw
This show played on the Discovery Channel Friday, Feb. 9 2007. This originally aired in 2006.

Show description:
Host Tom Brokaw and a team of scientists examine climate change, attempting to separate fact from fiction. They also reveal how the average person contributes to global warming and use computer models to predict its consequences. Experts include NASA climate scientist James Hansen and Princeton professors Michael Oppenheimer and Steven Pacala.

See the rest of this video in 5 parts from links below:
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