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Math Bee: Honeybees Seem To Understand The Notion Of Zero

03:15
Using card with black symbols, researchers trained honeybees to understand that sugar water would always be located under a card with the least number of symbols — including when presented with a card that was totally blank. (Getty Images)
Using card with black symbols, researchers trained honeybees to understand that sugar water would always be located under a card with the least number of symbols — including when presented with a card that was totally blank. (Getty Images)

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