Abdessattar Abdelkefi, an aerospace engineer, and his team at New Mexico State University stumbled upon the explanation as to why the wings of an albatross (and other large soaring birds) are black on top and white underneath. In the past, the color difference was explained as camouflage, a way for the bird to disappear in its surrounding when nesting on a rock for instance. Thanks to Abdelkefi, we now know better.

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