Global birth canal variation gives insight into human evolutionary past and modern obstetric practices

  A recent examination of pelvises from human skeletons indicate migration patterns and climate may be responsible for global variation in birth canal size and shape. This variation likely represents neutral evolution by random chance and not necessarily the selection for pelvic adaptations, challenging long-held theories for human evolution and modern obstetric protocols. You might … Continue reading Global birth canal variation gives insight into human evolutionary past and modern obstetric practices

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I’ll have what she’s having: Manipulation in chimpanzee copulation calls

When we think about animal relationships, some endearing examples of devoted couples come to mind: emperor penguins that faithfully guard their hatchlings for weeks while they wait for their mate to return; love birds (not surprisingly) that groom and feed each other during courtship, and some species of monkeys that intertwine their tails as they … Continue reading I’ll have what she’s having: Manipulation in chimpanzee copulation calls