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Brief Communications

Nature 414, 33-34 (1 November 2001) | doi:10.1038/35102108

Open Innovation Challenges

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Water capture by a desert beetle

Andrew R. Parker1 & Chris R. Lawrence2

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This insect has a tailor-made covering for collecting water from early-morning fog.

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Some beetles in the Namib Desert collect drinking water from fog-laden wind on their backs1. We show here that these large droplets form by virtue of the insect's bumpy surface, which consists of alternating hydrophobic, wax-coated and hydrophilic, non-waxy regions. The design of this fog-collecting structure can be reproduced cheaply on a commercial scale and may find application in water-trapping tent and building coverings, for example, or in water condensers and engines.