National Geographic On Demand

National Geographic on Demand is the home for the best animals, nature, history, science, engineering, people, and places content.

Roughly the same size as earth and at about the same distance from the sun, Venus is a vision of hell. Could earth be heading the same way?Richard Hammond journeys to discover the startlingáengineering connectionsábehind the Troll A gas platform, the largest object ever moved by manRichard discovers how the Airbus 380, the world's largerst airoplane was built.Richard discovers how the Taipei 101 tower, built next to a seismic fault line in a typhoon hotspot, is able to withstand extreme natural events.Richard discovers how the world's largerst casino was built.