Humans have many wonderful qualities, but we lack something that’s a common feature among most animals with backbones: a tail. Exactly why that is has been something of a mystery. Tails are useful for ...

For half a billion years or so, our ancestors sprouted tails. As fish, they used their tails to swim through the Cambrian seas. Much later, when they evolved into primates, their tails helped them ...

Some hold with the theory that the development of an embryo shows the stages of evolution. In other words, what first develops is fishlike, and then like a small mammal, and then like a lemur or ape, ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. TOKYO — If you’re prone to tripping or ...

A Brazilian baby boy was born with a real human tail that was successfully removed without complications at Albert Sabin Children’s Hospital in the city of Fortaleza, according to the Journal of ...

Scientists have found a mutation in our DNA that snipped our tails off. The mutation may have allowed our ancestors to walk upright. But it may also be behind a birth defect that still affects babies ...

A highly effective tail is needed in order for a sperm to be able to swim, and for a baby to be conceived. By using cryo-electron tomography, researchers have identified a completely new nanostructure ...

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