vampire bats will die if they can’t find blood for two…

vampire bats will die if they can’t find blood for two nights in a row. Luckily, generous well-fed bats will often regurgitate blood to share with others, in exchange for grooming. This has been noted by many naturalists as an example of reciprocal altruism in nature.

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Aztecs believed themselves to be living in the fifth world….

Aztecs believed themselves to be living in the fifth world. The fourth was destroyed by flood, the third by fire, the second by hurricanes and the first when jaguars ate everybody. source

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Nintendo’s Mario is named after the landlord of the…

Nintendo’s Mario is named after the landlord of the warehouse Nintendo was using as their American headquarters, the company had gotten behind in rent payment, prompting an angry visit from Mario, the developers subsequently immortalized him by renaming “Jumpman” to “Mario”.

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