Extensive Underground Infrastructure - BOSAI: Science that Can Save Your Life

Prepare yourself for disasters with NHK WORLD-JAPAN: https://www3.nhk.or.jp/nhkworld/en/sh... Watch more quality programs on NHK WORLD-JAPAN: https://www3.nhk.or.jp/nhkworld/en/sh... Beneath Tokyo’s top business district is a network of tunnels engineered to provide a stable power supply in the event of a disaster.