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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 ...

The ancient coelacanth, a lobe-finned fish, is a “living fossil” in every sense of the term. Biologists believe this supreme survivor has undergone little change in 400 million years. Here’s its story ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The human outer ear may have arisen from ancient fish gills. | Credit: A. Martin UW ...

Long before modern salmon ran Alaska’s rivers, their ancient relatives thrived alongside dinosaurs in the Cretaceous Arctic. Scientists have identified three new species from 73 million years ago, ...

Anyone who has ever squirmed through a dental cleaning can tell you how sensitive teeth can be. This sensitivity gives important feedback about temperature, pressure—and yes, pain—as we bite and chew ...