Add Yahoo as a preferred source to see more of our stories on Google. Chipmunk specimens in the Field Museum's collections. Tiny rodents living in a major American city are unique examples of ...

Here’s what you’ll learn when you read this story: As Pizza Rat proved, some creatures can adapt to just about anything, even the concrete jungle. And it isn’t just New York City—Chicago rodents have ...

Chipmunk and vole skulls from 125 years ago compared to today reflect changes in diet and noise exposure, say American scientists. They found that voles now have smaller ear bones than over a century ...

Adaptation and evolution can steer the trajectory of a species with the slightest environmental change. Scientists in Chicago are mapping some fascinating evolutionary changes to local animals and how ...

In general, evolution is a long, slow process of tiny changes passed down over generations, resulting in new adaptations and even new species over thousands or millions of years. But when living ...