You may never have wondered why you have five fingers at the end of each arm (or why you have fingers at all, for that matter) but the answer is surprisingly interesting and a little cheeky. A recent ...

Our sensitive teeth originally evolved from the "body armor" of extinct fish that lived 465 million years ago, scientists say. In a new study, the researchers showed how sensory tissue discovered on ...

View post: We Already Have a Contender for the Best Movie of 2026 A new study, published on May 21 in the journal Nature, has revealed surprising information about the origins of human teeth. Our ...

The efficient architecture of our joints, which allows our skeletons to be flexible and sturdy, originated among our most ancient jawed fish ancestors, according to a new study. The efficient ...

Teeth are sensitive because they evolved from sensory tissue in both ancient vertebrates and ancient arthropods. When you purchase through links on our site, we may earn an affiliate commission.