"Science Fiction is speculative fiction in which the author takes as his first postulate the real world as we know it, including all established facts and natural laws."
The Fremen were tribal people who lived in the desert that covered the surface of the planet Dune. All moisture was precious; even the water in a person's body was carefully conserved after death.
How did the Fremen do it? One possible approach involves imitating plants with surfaces that have low binding tension - water just slides off. Such surfaces are made from a hydrophobic substance - usually wax-like in character. But "bumps" make it work even better:
Water Repellent Surface-related
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Army's New Bird-Like Surveillance UAV
'The prototype blue-bellied, gray-backed tracer-bird with the wide-angle eye...'
Honda's Tumblebug - The UNI-CUB beta
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NASA's LADEE Enters Lunar Orbit
'... dust normally on the surface picks up and keeps a charge.'
3D Printing An Entire Car
"... Almost as good as the original it was printed from."
Aldebaran Robot Talks Like C3PO - Almost
'See Vee Threepio - Vee for versatility - at your service...'
Google's Skin Tattoo Lie Detector
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inFORM Dynamic Shape Output Device
Like that pushpin device you remember, but supercharged.
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'In every diaper there is a fine copper wire...'
Robert Heinlein, Your Personal Electric Helicopter Will Be Ready In 2016
"They were half way home when a single flyer, hopping free in a copter harness, approached the little parade."
WildCat Runs Faster Than You, Untethered
'...moving with such drifting ease that it was like a single solid cloud of black-grey smoke blown at him in silence.' Almost.
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