Channel: Wisdom Unfolded

Category: Education

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Description: We are the furless apes of the world, having shed most of our body hair long ago and this is How Humans Lost Their Fur Subscribe Now goo.gl/Xhcsq8 Millions of modern humans ask themselves the same question every morning while looking in the mirror: Why am I so hairy? As a society, we spend millions of dollars per year on lip waxing, eyebrow threading, laser hair removal, and face and leg shaving, not to mention the cash we hand over to Supercuts or the neighborhood salon. But it turns out we are asking the wrong question—at least according to scientists who study human genetics and evolution. For them, the big mystery is why we are so hairless. What is the latest theory of why humans lost their body hair? Why are we the only hairless primate? We, humans, are conspicuous among the 5,000 or so mammal species in that we are effectively naked. Just consider what your pet dog or cat (or, for that matter, a polar bear) would look like, and how it might feel if its furry coat were shorn. Scientists have suggested three main explanations for why humans lack fur. All revolve around the idea that it may have been advantageous for our evolving lineage to have become less and less hairy during the six million years since we shared a common ancestor with our closest living relative, the chimpanzee. The aquatic-ape hypothesis suggests that six million to eight million years ago ape-like ancestors of modern humans had a semiaquatic lifestyle based on foraging for food in shallow waters. The fur is not an effective insulator in water, and so the theory asserts that we evolved to lose our fur, replacing it, as other aquatic mammals have, with relatively high levels of body fat. Imaginative as this explanation is—and helpful in providing us with an excuse for being overweight—paleontological evidence for an aquatic phase of human existence has proven elusive. ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ Follow and Like Me ☀ Twitter : twitter.com/iarslanpk ☀ Facebook: facebook.com/iarslanpk ☀ Instagram: instagram.com/iarslanpk ☀ Visit Our Website sabparho.com ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ☀ If you found this video valuable, give it a like 👍 . ☀ If you know someone who needs to watch it, share it ↪️. ☀ Leave a comment below with your thoughts ✍. ☀ Add it to a playlist if you want to watch it later 🔄.