HackerMichael Levin: The electrical blueprints that orchestrate life | TED
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Michael Levin describes altering a planarian’s bioelectric state and cutting the worm again later in plain water. Repeated two-headed regeneration distinguishes a transient change in shape from a state with a lasting influence.
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amazingly, there is an electrical gradient, head to tail, that's generated that tells the piece where the heads and the tails go and in fact, how many heads or tails you're supposed to have.These worms, when cut again and again, in the future, in plain water, they continue to regenerate as two-headed.