Cities are being cloned in the virtual world. Here’s what that means for the future.

CNN

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With space in our cities at a premium, and the majority of the world's population expected to live in urban areas within the next few decades, there is less room for trial and error when it comes to urban planning - with decisions made today having critical impacts on the future.

But what if there was a way to test and analyze different scenarios first, before starting anything? That's the thinking behind the "digital twins" being made in cities all over the world, including Shanghai, New York, Singapore, and Helsinki.

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