Former Vice President Al Gore explains the facts of global warming, presents arguments that the dangers of global warning have reached the level of crisis, and addresses the efforts of certain interests to discredit the anti-global warming cause. Between lecture segments, Gore discusses his personal commitment to the environment, sharing anecdotes from his experiences.

This ABC News program spotlights the work of Doug Owsley, curator at the Smithsonian Institution's National Museum of Natural History, who is a keen interpreter of the silent yet expressive language of bones. Owsley and his biographer, Jeff Benedict, give examples of how he has used bioarchaeology and forensic anthropology to unravel mysteries ranging from identifying an exhumed Civil War cavalryman to determining the true cause of death of Branch...

Documentary on the causes of the increased wildfire problems in Colorado. Looks at the use of small-scale logging equipment used for fire mitigation on smaller forest acreages. Techniques of forest management are discussed.

In this highly anticipated update of the influential and widely acclaimed Tough Guise, pioneering anti-violence educator and cultural theorist Jackson Katz argues that the ongoing epidemic of men's violence in America is rooted in our inability as a society to move beyond outmoded ideals of manhood. In a sweeping analysis that cuts across racial, ethnic, and class lines, Katz examines mass shootings, day-to-day gun violence, violence against women,...