Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Humans have many ...

Approximately 25 million years ago, an ancestor of both humans and apes genetically diverged from monkeys and lost its tail. No one had identified the genetic mutation responsible for this dramatic ...

They’re not monkeying around with this breakthrough. Researchers from New York University Langone Health may have finally learned how early humans took a major step away from predecessor primates in ...

WASHINGTON (AP) — Our very ancient animal ancestors had tails. Why don’t we? Somewhere around 20 million or 25 million years ago, when apes diverged from monkeys, our branch of the tree of life shed ...

Researchers discover a potential genetic connection between humans' tail loss and a type of birth defect. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

(CNN) — 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 ...