The whole thing is a skit. There’s no real patient on the other end of the autofractor. But the optometrist is using the skit as an educational opportunity for viewers. The optometrist warns in the ...

Human beings don’t have a thick coat of fur like many other mammals do. Scientists think it has to do with something else ...

Have you ever wondered why you don't have thick hair covering your whole body like a dog, cat or gorilla does? Humans aren't the only mammals with sparse hair. Elephants, rhinos and naked mole ...

Why don’t humans have hair all over their bodies like other animals? – Murilo, age 5, Brazil Have you ever wondered why you don’t have thick hair covering your whole body like a dog ...

Have you ever wondered why you don’t have thick hair covering your whole body like a dog, cat or gorilla does? Humans aren’t the only mammals with sparse hair. Elephants, rhinos and naked mole ...