Could Humans Survive on an Alien World With No Freshwater?

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What would it take for humans to live on a desert planet like the one in Dune? 🪐

This last part is at least a boon for would-be settlers of Arrakis, like the book's protagonistic House Atreides, who at least would have an atmosphere that they could breathe.

It isn't completely inhospitable to human life, however, and upwards of 10 million semi-indigenous Fremen bedouins live in the deserts of Arrakis while another 5 million live in the capital city Arrakeen, located at the north pole of the planet, where the climate is milder.

But an important element of Fremen culture is the conservation of water by any means necessary, so this little bit of moisture pulled from the air adds something to the reservoir, so to speak, and every little bit of water is valuable. The stillsuit is designed to capture all the wastewater produced by the human body — including sweat, urine, tears, and even the water vapor in your breath — and recycle it into fresh, drinkable water. In the book, the Fremen's stillsuit is said to be so efficient at recycling water that while wearing one you would lose only a"thimbleful" of water a day.

 

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