New fossil research shows that teeth originally evolved as sensory tissue embedded in the armored exoskeletons of ancient ...

A novel description for a COVID-19 symptom is driving a surge in Google searches, with people across the globe referring to it as "razor blade throat." Although experts say a sore throat has been a ...

A positive COVID-19 test result is not something that anyone wants to see — but now there may be an extra reason to avoid ...

Giraffes have the same number of teeth as humans do, but they are designed in a very different way to serve a unique purpose.

“They thought we wouldn’t put up a fight. But they were wrong.” ...