A preview of the new award-winning documentary "From Billions to None: The Passenger Pigeon’s Flight to Extinction," which tells the incredible forgotten story of the passenger pigeon, its unlikely extinction, and its striking relevance to conservation challenges today. Almost 100 years ago on September 1, 1914, Martha, the last known passenger pigeon in existence (named after Martha Washington) died in the Cincinnati Zoo. A superabundant species of billions that darkened the entire sky disappeared in a matter of decades. What happened to the passenger pigeon? You could say we happened. Follow naturalist and author Joel Greenberg on a journey to discover how and why this bird went extinct, and how today the story is more relevant than ever. Airing on public television Fall 2014. For more information go to billionstonone.com
