We can learn a great deal about the lives and social structures of civilizations thousands of years ago by studying what they ...

Amino acids have been discovered in 48-million-year-old fossil teeth, revealing new insights into ancient life and evolution ...

Study of tooth enamel reveals that the Sumerians did not eat fish despite living by the sea, challenging what we thought ...

Tooth enamel is the hardest substance in the human body, protecting the innermost layers of the tooth, including the dentin and pulp. Some genetic disorders, however, result in weakened enamel that ...