The sea-level is rising, year after year; up to an expected rise of up to 10 metres in the coming centuries. So how to protect the people living in the low countries against the consequences? Of course, every single government could decide to build its own dams, dykes and walls, but what if you could build a single big one that could protect everybody at once? Yes, why not build sturdy, 475 kilometres long dam between Norway and Scotland? Or wait, why not build a second one as well, 160 kilometres between Cornwall and Bretagne? With these structures, one could protect half of Europe against the rising water. With some extra measures around Ireland maybe even more.

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