Status among hyenas sounds like a laughing matter. Spotted hyenas may not be amused, but they do make noises that to human ears sound like laughter. Biologists refer to this classic hyena laugh, a ...
April 23, 2009 -- Deteriorating screws in bridges, fish that listen in the dark, medical devices that use sound to treat disease, the detected comeback of a long-gone whale, the sound of hyenas, ...
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