And because tails are an extension of the spine, the findings could also have implications for understanding malformations of ...

Human embryos briefly exhibit traits like tails and gill-like structures, revealing our evolutionary history and deep ...

But this way of getting around also totally eliminates the need for a tail. Because even though a human head weighs a hefty 5 kilograms, it sits on top of the body when you walk — not in front.

In the case of human beings, the presence of a tail is a striking example of such ancestry. Many cases of people born with "tails" exist in the medical literature, but it is not always clear ...

In the case of human beings, the presence of a tail is a striking example of such ancestry. Many cases of people born with "tails" exist in the medical literature, but it is not always clear ...