A slime with memory

Even without a brain, this slime mold knows where it’s been

By Stephen Ornes, 13:21 PM October 25, 2012

A slime mold called Physarum polycephalum is a throbbing, bright yellow blob that can crawl from one spot to another. Some people liken its appearance to moving, pulsing dog barf. Others clearly feel more tenderness toward the organism — enough to spend much of their life studying it. One such team of scientists now reports finding that although slime molds lack a brain, this goo may still have a memory of sorts.

Despite its name, a slime mold is not a mold or fungi. Although it moves, it...

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