BBC Video: Earth the Biography - Almost 4 Hours - Blu-ray Disc by Dolby

BBC Video: Earth the Biography - Almost 4 Hours - Blu-ray Disc by Dolby "A Story of Our World" If you have any questions, feel free to ask and I would be happy to help. If you would like to see a photo of the bottom of the disc you can let me know and I can do that. All Blu-rays do work when I last tested them. Cheers, David T. Chapman