Globally, twins account for about six per 1,000 live births. However, in a small village in India there is evidence of a mysterious twin epidemic. In the remote village of Kodinhi, almost six times as many twins are born as the global average.
National Geographic investigates the twin phenomenon here, drilling into the legacy of the community to search for the origin of inheritance patterns and genetic mutations that might offer a scientific breakthrough.
The DVD-R is a non-rewriteable digital format that is compatible with most commercial DVD players. The DVD-R format is created with MPEG2 Variable Bit Rate Compression with stereo sound.
How our DVDs and DVD-Rs Differ
Customers who purchase programs in the NG DVD Exclusives Library will receive a non-interactive, play only disc. There is no chaptering information on these DVDs, but there are chapter marks approximately every five minutes, which make it easy to fast forward through a program. The DVD-R format provides the digital video and audio quality you expect from all of our DVDs.
NOTE: The NG DVD-R titles are not closed-captioned. We apologize for any inconvenience this limitation may cause.