Rendering of the Shimzu Mega-City Pyramid, a planned megacity in Tokyo that will take 93 years to construct.

In September, the YouTube channel RealLifeLore posted a video asking if it would be possible for everyone on Earth to live in the same city. The video examined the population density of cities and looked at examples of real-life hyper-dense living situations like the Kowloon Walled City in Hong Kong. But viewers were not satisfied. They wanted to know not only how much space everyone on Earth living together would take up, but whether such a living situation would actually be feasible.

Now, the channel is back with a video answer to those queries. The new clip examines in earnest the idea of a mega-city where the world's population could live with sufficient access to water, energy, and food. The result is a building in Brazil hundreds of kilometers tall, where we all are forced to eat sweet potatoes for eternity.

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The plans for this uncomfortable scenario are based in part on a real project, the Shimzu Mega-City Pyramid in Tokyo. The Shimzu Corporation plans to build a floating city in Tokyo Bay that can house up to one million people. The catch is that we don't yet have the technology necessary to build such a structure, so Shimzu estimates construction will start in 2030 and be completed in 2110.

As the video's narrator says, nothing about this idea sounds particularly fun for the people living in this hypothetical building. But it does have the advantage of being self sufficient and contained to a small area of land (about the size of the Scottish Faroe Islands), so in the case of a nuclear disaster or ecological devastation, the total world population could technically survive in this massive walled metropolis, without ever needing to venture outside. We can't wait.

Source: RealLifeLore

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