CHICAGO -- Three stories above the Field Museum’s exhibits, rows and rows of taxidermied chipmunks filled a tray in the museum’s mammal archives. Pointing to two of the oldest critters, mammalogist ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Rodents in Chicago have been adapting to an increasingly urban ...

Scientists studying 125 years of specimens from Chicago’s Field Museum found chipmunks and voles have evolved skull changes linked to urban living. Chipmunks developed larger skulls but shorter teeth, ...

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