The sensitive interior of human teeth might have originated from a seemingly unlikely place: sensory tissue in fish that were swimming in Earth’s oceans 465 million years ago. While our teeth are ...

Stingrays, also known as sea rays, are flat-bodied members of the Myliobatiformes order; the same order that contains sharks. Within this order, there are eight distinct families of stingrays, with ...

Killer whales, also known as orcas, are easily recognized by their stunning black and white appearance. These huge animals can reach up to 26 feet long and are actually the largest members of the ...

A pediatric dentist and an anthropologist explain how baby teeth and adult teeth help humans chomp their food over a long ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. The saber-toothed cats that once prowled modern day California had ...