Urban wildlife is evolving right under our noses — and scientists have the skulls to prove it. By examining over a century’s ...

California ground squirrels are as commonplace as the seeds, acorns, and grains they’re often seen nibbling. Yet, scientists ...

When living things are faced with dramatic shifts in the world around them, they sometimes rapidly adapt to better survive.

Voles are rodents that are closer in size and shape to hamsters than they are to the similarly sounding moles. These rodents are a common sight throughout North America, but some people ascribe a mole ...

Scientists recently found an example of evolution in real time, tucked away in the collection drawers of the Field Museum in ...

Two new studies add to the evidence that human activity, from fishing to urban development, is driving the evolution of wild ...

Chipmunks are members of the same family as squirrels. The small rodents spend most of their time aboveground, eating seeds, ...

A new Field Museum study reveals that Chicago's chipmunks have grown larger with shorter teeth due to processed human food, ...

The findings of a new study "clearly show that interfering with the environment has a detectable effect on wildlife," a ...

Feces are a valuable tool in the world of animal identification. It might sound gross, but it’s one of the best ways to ...