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People seem to always forget about nuclear. Pairing nuclear plants with desalination is perfect because you also need water in most nuclear reactor designs.

That doesn't solve the problem of what to do with the salt and other chemicals removed via desalinization. You're left with literally toxic brine that has to be dumped somewhere, at the expense of the ecosystems you dump in.

https://www.scientificamerican.com/article/slaking-the-world...

There are solutions besides straight up dumping the brine. Technology is evolving to handle this as desalination becomes more common. Of course the easiest thing is dumping it so some regulation may be required.

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