Animal Documentarians Beverly and Dereck Joubert.

The worldwide lion population has declined a staggering 90 percent in the past 50 years. In their documentary The Last Lions, conservationists Beverly and Dereck Joubert track the giant hunters across Botswana and warn that without intervention, lions may soon go extinct.

Documentary filmmaker Ken Burns has an upcoming PBS documentary series that tells the story of the World War II through the eyes of the soldiers who fought in it.

Simply called The War, the 14-hour, seven-part series begins airing in September.

Peter L. Stein is producer, director and writer of the documentary "The Castro." It will air nationally on PBS this Friday, June 12. "The Castro" is the name of a San Francisco neighborhood that is at the heart of the city's gay community. His film recently won a Peabody Award. He serves as Executive Producer of KQED's series Neighborhoods: The Hidden Cities of San Francisco. AND We'll also hear from Cleve Jones who lived in the Castro district where he became involved in the gay-rights movement. He is featured in Stein's film.