For sea otters, a trip to the dentist is no sweat.
The protective enamel on their teeth is more than twice as strong as humans’ enamel â but it wasnât always this way. Long ago, scientists say in a new study, early humansâ teeth were just as strong as sea ottersâ clam-crunching pearly whites. And this finding could be a key to understanding our earliest ancestorsâ dietary habits.
Tooth enamel in most animals is comprised of tiny prism-like crystals clumped together to form