It is possible to capture water vapor from the air and condense it into drinking water. The air simply needs to be cooled to cause the water vapor to become liquid. Then the liquid is collected. In Australia, which has experienced widespread drought over the last two decades, atmospheric water generators have been used to convert water vapor into thousands of liters of drinking water.
you might be interested in reading these reports:
(1) water capture by a dessert beetle (Nature)
(2) directional water collection on wetted spider silk (Nature)
(3) site of water vapor absorption in the desert cockroach, Arenivaga investigata (PNAS)
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