Lost at sea?This desalination unit can fit in a suitcase: gadget

https://www.katadyngroup.com/us/en/item~p6786 ~1kg, available for purchase by consumers, much smaller than a suitcase, no electricity required.

(Yes, I’m excited to see new ways to achieve long-term sustainable desalination without changing filters, but the road from the MIT lab to practical, large-scale production isn’t easy.)

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