Growing up, I never loved jewelry. But I’ve been wearing the same necklace for the past year: a wrapped lemon shark tooth ...

Add Yahoo as a preferred source to see more of our stories on Google. A close-up of a blacktip reef shark tooth that was used in the research. - Max Baum How will the climate crisis affect one of the ...

Shark teeth are often considered the most common vertebrate fossils in the world, and for good reason. Each individual shark has rows upon rows of chompers that fall out and get replaced in conveyor ...