Animals, including humans, feel sound as well as hear it, and some of the most meaningful audio communication happens at frequencies that people can't hear. Elephants, for example, use these ...

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Read an abridged version of Alex Chadwick's discussion with Rex Cocroft and his colleague, Dr. Chung Ping Lin, as they search for treehoppers in the Amazon. Of all the creatures humans encounter on ...

A group of treehoppers sit on a plant stem in University of Missouri Professor Rex Cocroft's lab. Humans can't hear the vibrations these insects use to communicate with, but Cocroft has been able to ...

This treehopper in a greenhouse at Saint Louis University would not normally have a purple horn or "pronotum." It was painted that color for identification purposes. (Veronique LaCapra/St. Louis ...

Some creatures are so quiet, they appear to make no sound at all. When a male treehopper calls out for a mate, he shakes his abdomen 100 times a second to produce a low sound that vibrates through the ...

From the ultra-high frequency hearing of the Greater Wax Moth to the polarized light-detecting eyes of mantis shrimp, evolution by natural selection has produced a spectacular array of sensory ...

Evidence suggests at least one group of insects, the tiny treehopper, communicates using sound vibrations. Researcher Rex Cocroft has scoured a... Societies of Sound in the Forest Societies of Sound ...

Loading external pages may require significantly more data usage than loading CBC Lite story pages. Some creatures are so quiet, they appear to make no sound at all. When a male treehopper calls out ...