Chimpanzee Birth

A great quote from the referenced article is "We tend to think that we are unique, without knowing [enough] about other animals."

According to the BBC Earth News: "A team took close-up footage of captive chimps giving birth, which revealed that the newborn emerges from the birth canal facing away from the mother. Scientists had believed that this birth position evolved in the primate ancestors of modern humans. These findings could refute that theory."

It is amazing that something so observable has eluded scientists for so long. In addition to being an interesting story, it's a gentle reminder of the necessity for scientists to always be objective and open minded.