National Geographic - Megacities - 1. LondonEnglish | 46 minutes | 704x384 | DivX | MP3 - 128kbps | 700 MB
Once, it was the capital of the world's greatest empire. Today, London remains a crossroads of the world. London has not one but 3 major modes of transportation flowing through the city - by air, land and water. They are the keys to keeping this mega city alive and running. Each is crucial to sustaining the city, as well as the global community. London has the world's busiest international airspace, the Thames is the world's busiest urban river, and the city streets are so congested, you must pay to drive on them. This episode examines the technology that is used to protect London's infrastructure from disaster. To head off disaster, London deploys high-tech cameras everywhere, constantly scanning the skies, the river, and the ground. This is a view of London like nothing ever seen before and viewers are taken behind the scenes to watch the watchers and their incredible technologies.