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 ...

A new study, published on May 21 in the journal Nature, has revealed surprising information about the origins of human teeth. Our teeth evolved from the piercing “body armor” of extinct fish, which ...

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 ...

It turns out the human ear got off to a fishy start. Literally. A fascinating new study reveals that the mammalian outer ear has its evolutionary roots in the gills of ancient fish. This surprising ...

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 ...

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.