Scientists Discover Remains of a Baby With a Nearly Complete Skull, It's 150,000 Years Older Than the Lucy Specimen ...

Deep down you uncover bones that look old. You recover a full skull with teeth, and most of the bones of the body, missing a few smaller vertebrae and toes. What can you find out about the person ...

Teeth are made of enamel, calcium, and other substances. This article defines key terms to help you understand how teeth fit ...