As Humans Change Landscape, Brains of Some Animals Change Too

The continuing process of evolution can be measured in the skulls of small mammals.  University of Minnesota biologist Emilie C. Snell-Rood suggests that the brains of creatures like mice and bats have grown bigger as we humans have changed the landscapes where they live.

Measuring the dimensions of dozens of skulls collected over a century and kept at the school’s Museum of Natural History, Snell-Rood and her student Naomi Wick estimated brain size in 10 species.  They found …

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