Is it time to build floating cities?

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Nazi floating city

credit: Marvel comics; Nazi floating city

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The Guardian asks, Has the time come for floating cities?

It may seem like science fiction, but as rising sea levels threaten low-lying nations around the world, neighbourhoods like this may become more common. Whereas some coastal cities will double down on sea defences, others are beginning to explore a solution that welcomes approaching tides. What if our cities themselves were to take to the seas?

It's not just rising waters that are making people consider going offshore. There are politics too, a libertarian rejection of big intrusive taxing government. It's not a new idea, and TreeHugger has looked at a few of these proposals before; here's a slideshow of some of the most interesting and sometimes crazy proposals.

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