What if an extra-terrestrial force attacked Earth? What might that look like and how will the people of Earth respond? Consulting a cast of world-renowned scientists, survival experts and defense experts, National Geographic explores this frightening scenario. Experts reveal what could motivate alien invaders to attack Earth, and speculate on how the attack might play out, the strategy alien invaders might use, and the most effective ways for humans to respond.
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-R 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.
Based on Richard Muller's book, Physics for Future
Presidents, National Geographic investigates the science behind the dangers of a high-altitude electromagnetic pulse, or HEMP. Picture an instantaneous deathblow to the vital engines that power our society, delivered by a nuclear ...
Hubble's Cosmic Journey , is a celebration of
the Hubble Space Telescope's 25 years orbiting our planet. Narrated by renowned astrophysicist, Neil deGrasse Tyson, this one-hour program is the story of one of the most remarkable advances in modern technology, ...
National Geographic journeys to the depths of outer
space to reveal stunning, up-close images of our mysterious solar system. This 3-disc set features Inside the Milky Way, Most Powerful Stars, Stellar Storms, Hubble’s Amazing Universe, Comets, and Cosmic Fury. *Please ...