A shark attack survivor is opening about the moment he was attacked by a 9-foot bull shark, saying it was like being hit by a ...

They produce teeth continuously. Their teeth are not set in sockets like those of other vertebrates but rather loosely and flexibly attached by tendons to their jaws. If they didn't replace teeth ...

It plays an important role e.g. in the structure of bones, teeth, tendons, ligaments and skin. Scientists see an opportunity ...