Human Evolution Fun Facts

@BioAnthFunFacts

Alexandra Kralick here 👋 PhD candidate at UPenn sharing the fun biological anthropology facts I find! (images not my own)

Joined December 2017
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  1. Jun 28

    Even the fittest humans can have twice the amount of body fat as a typical chimp, which is usually less than 9%. A healthy human body fat percentage can be anywhere from 14 to 31%. We are born to be fat primates!

    3 replies 11 retweets 24 likes
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  2. Jun 28

    Great apes react to the deaths of members of their communities

    3 likes
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  3. Retweeted
    Jun 28

    Many primates can stand up and walk around for short periods of time, but only humans use this posture for their primary mode of locomotion.

    1 reply 9 retweets 22 likes
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  4. Retweeted
    Jun 26

    It's a girl! Cool new nuclear DNA study in shows 8 year-old from Scladina, Belgium w/ rapid dental development and an abbreviated nursing period was a female! See Smith et al. 2007 and Austin et al. 2013 for info on her dental development & weaning.

    The first sequence of the Wakin goldfish , setting water-hating candidates up for success, and a new chapter in the Story of migrations in the latest round of research from Science Advances.
    29 retweets 92 likes
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  5. Retweeted
    Jun 27

    More than 100 millennia ago, people were roasting tubers over the fire, a culinary practice that fueled their bodies and may have aided their migrations.

    1 reply 8 retweets 17 likes
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  6. Jun 27

    Olfactory cues are a chemical signal received through smell. They are important for signaling information in primates. But what chemicals are they? Usually volatile fatty acids!

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  7. Retweeted
    Jun 26

    This discovery show the first example of variation in the long-term use tool in primates, outside the human lineage 🙉🥜

    5 retweets 9 likes
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  8. Jun 27

    Proteins dating back more than one million years have been extracted from some fossils! This technique could help to answer some questions about the hominin family tree when DNA can’t!

    Move over, DNA: ancient proteins are starting to reveal humanity’s history
    1 reply 13 retweets 28 likes
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  9. Jun 26

    Romantic kissing is only the norm in 46% of human cultures (Side note, we know monkeys and apes kiss, just not in a sexual or romantic context)

    3 retweets 5 likes
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  10. Jun 25

    Olduvai gorge at the time our ancestors were there was a lake margin

    4 retweets 14 likes
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  11. Retweeted
    Jun 23

    There is a chimpanzee dictionary explaining the meaning of chimp body gestures.

    7 replies 60 retweets 285 likes
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  12. Retweeted
    Jun 24

    Remembering William King , the man who declared Neanderthals a new species, Homo neanderthalensis in 1864. He believed the thoughts and desires of the Neanderthal "never soared above those of a brute."

    5 replies 36 retweets 108 likes
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  13. Retweeted
    Jun 18

    The brain uses nearly half the body's energy during childhood. In a new paper, Clancy Blair and I argue that variation in the brain's expenditure could influence energy balance and weight gain. New intervention opportunities?

    10 retweets 21 likes
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  14. Jun 18

    Scientists found first biological evidence that domesticated dogs evolved a specialized ability to communicate better with humans- a special pair of muscles framing their eyes responsible for that “adopt me” look, where dogs raise their inner eyebrows!

    4 retweets 6 likes
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  15. Jun 18

    In the US, women represent 80% of all cases of autoimmune disease. Why? The placenta might be the reason. Since women are rarely pregnant nowadays, they are getting little pushback from placentas during pregnancies, so the immune system gets too aggressive

    1 reply 4 retweets 7 likes
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  16. Jun 17

    Next time you go to the zoo, see if you can tell if the orangutans are from the island of Sumatra or Borneo! Sumatran orangs (Pongo abelii, right in image) tend to have lighter, longer, and less shiny hairs, than the darker shorter hair of the Bornean (Pongo pygmaeus, on left)

    1 reply 6 retweets 10 likes
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  17. Jun 17

    Sumatran orangs have long oval faces & the Bornean orangs have broader faces. Why? Sumatran cheek flanges extend laterally parallel to the face, giving it a diamond shape. Bornean flanges develop laterally from the top & side of the face, giving it a square shape (MacKinnon 1974)

    1 reply 10 retweets 26 likes
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  18. Retweeted
    Jun 15

    Prehistoric Puppy May Be Earliest Evidence of Pet-Human Bonding via

    1 reply 43 retweets 99 likes
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  19. Retweeted
    Jun 16

    So-called "sustainable" has decreased wild numbers in Borneo to such an extent that orangutan populations are on the edge of extinction. It is not enough to say we won't expand our plantations. Restoration & restitution is what is needed for "sustainability."

    4 replies 47 retweets 81 likes
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  20. Jun 15

    Young students have something called “text neck”. The muscles that hold up their head while they look down at their various screens have strengthened this boney protuberance!!

    8 retweets 22 likes
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