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Honeybees can recognize the number zero

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It is incredibly humbling to realize that an insect with a brain the size of a sesame seed grasps abstract mathematics better than some toddlers. Scientists trained bees to choose displays with fewer shapes for a sugar reward. When presented with a blank display versus one shape, the bees consistently chose the void. They officially comprehend "nothingness," which is quite profound for a bug.

Honeybees can recognize the number zero
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