National Geographic-Slime Has Memory but No Brain

After some experimenting with a slim mold, scientists have discovered that it may be able to memorize where it has been. The slime leaves a trail of residue wherever it goes. This trail lets it know where it has been. The way it was tested was by placing the slime in a trap where it was supposed to find a sugar solution. It was able to find it in 120 hours. When the slime was put in the same trap but that was already coated with slime, it had a more difficult time finding the sugar solution. It could not trace where it had been. The slime does not have a brain and scientist say it uses externalized spatial memory.


It is weird to know that something that has no brain can memorize things. We tend to think of memorizing as using your brain and this slime can do the same without it. It makes me think of what other things things without a brain can do.