About 500 million years ago, not a single creature had a skull. Over time, these bony plates evolved into the structural marvels that vertebrates—animals with spinal cords, aka you, me, and your pug, ...

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 ...

A bioarchaeologist is a scientist who combines biology, the study of life, with archaeology, the study of human history ...