Scientists recently discovered that not only can the planarian worm regrow its head if it's cut off, the regenerated brain contains the same memories that were stored in the decapitated one.
Researchers from Tufts University in Boston tested the memory of the planarian worms by measuring how long it took them to reach food in a lab environment.
The small yellow worms had been trained to ignore the bright lights in the lab so they could find their meals without being distracted and the scientists found that even after decapitation worms remembered this training.
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