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 ...

All through history, sharks have maintained a reputation as silent hunters. In documentaries, blockbuster feature films and even among experts, it has widely been held that the top predators simply ...

Researchers believe the sounds are made by the sharks snapping their flattened teeth together, possibly as a stress or warning signal. This discovery challenges the long-held belief that sharks are ...