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Grasshopper Mice Are Numb to the Pain of the Bark Scorpion Sting

Grasshopper Mice Are Numb to the Pain of the Bark Scorpion Sting

The painful, potentially deadly stings of bark scorpions are nothing more than a slight nuisance to grasshopper mice, which voraciously kill and consume their prey with ease. When stung, the mice briefly lick their paws and move in again for the kill.

Sodium Channels Evolved Before Animals’ Nervous Systems, Research Shows

Sodium Channels Evolved Before Animals’ Nervous Systems, Research Shows

An essential component of animal nervous systems — sodium channels — evolved prior to the evolution of those systems, researchers from The University of Texas at Austin have discovered. “The first nervous systems appeared in jellyfish-like animals six hundred million years ago or so,” says Harold Zakon, professor of neurobiology, “and it was thought that…   » Continue Reading

Electric Fish Plug In to Communicate

Just as people plug in to computers, smart phones and electric outlets to communicate, electric fish communicate by quickly plugging special channels into their cells to generate electrical impulses, University of Texas at Austin researchers have discovered.