This week, a second look at the special edition from the city where every problem has a technological solution.
If you feel out of touch at work, why not move into an intelligent building and plug into a global network? Plus a look at why suspended animation is the latest way to keep fish fresh for the preparation of sushi.
And, as the diet of the Japanese changes and their average size increases, how a laser tape measure is keeping tabs on a growing population.
But Tokyo is living on borrowed time - could an earthquake shake their faith in technology? With Howard Stableford and Kate Bellingham.
Producers Tim Haines and Kate O'Sullivan
Editor Dana Purvis
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