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Published online 15 April 1999 | Nature | doi:10.1038/news990415-3
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Crustation insulation
Many animals with backbones - vertebrates, such as you and me - insulate much of the electrical wiring of their nervous systems by wrapping it in multilayered sheaths of a fatty material called myelin. This insulation allows electrical nerve impulses to be conveyed over long distances much more rapidly.
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