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Innumeracy, in a data-driven age, means ceding control and understanding of an substantial chunk of yourself – your online reputation, the scores that colleges and employers use to screen out undesirable candidates – to others.
Once they’re gone, mammalian arms and legs can’t ever be restored. But if you cut off a salamander’s leg it will reappear in just a few weeks. The enigma of amphibian organ regeneration has long puzzled scientists. Now, a new wave of scientists hopes to put it to use.