Articles on Horses

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A cutaneous horn is a cone-shaped growth on the skin formed from compacted, dead keratin. Jojo via Wikimedia Commons

Why some humans grow horns

Keratin is the tough protein that forms hair, nails and hooves. It’s also responsible for something far stranger: human horns.
People have collected fossil horses throughout North America for centuries. Florida Museum/Mary Warrick

Horses lived in the Americas for millions of years – new research helps paleontologists understand the fossils we’ve found and those that are missing from the record

Horse fossils are abundant and widespread across North America. Scientists often use their long history to illustrate how species evolve in response to a changing environment.

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