Beneath the surface of our everyday world lies a creature so small and unassuming, yet it holds a secret that defies expectations. While we often imagine large predators or grazing animals when ...

Kangaroos thrive on tough grass using thick enamel instead of complex teeth, revealing an unexpected path in evolution.

Teeth first evolved as sensory organs, not for chewing, according to a new analysis of animal fossils. The first tooth-like structures seem to have been sensitive nodules on the skin of early fish ...

Long before evolution equipped them with the right teeth, early humans began eating tough grasses and starchy underground plants—foods rich in energy but hard to chew. A new study reveals that this ...

Teeth are like tiny biological time capsules. They tell stories about ancient diets and environments long after their owners ...

Large kangaroos today roam long distances across the outback, often surviving droughts by moving in mobs to find new food when pickings are slim. But not all kangaroos have been this way. In new ...