(Close-up of a shark with sharp teeth. Credit: GIOVANNI NITTI / Shutterstock.) Shark teeth are a marvel of evolution. They are so sharp that many island cultures once used them as weapons and tools to ...

Sharks are known for their razor-sharp teeth, but a new study warns that rising ocean acidity could leave even the sea’s fiercest predators with weaker, more brittle bites. At the heart of the problem ...

STANFORD, Calif. (KGO) -- If you ever come face-to-face with the wrong kind of shark, there's something you probably want to avoid. Just a hint: they're long and really sharp. But now, researchers at ...

Do they make dentures for sharks? In the future, they might need to, with recent research suggesting that sharks may lose their deadly bite to ocean acidification. Shark teeth are the envy of the ...

While many people are scared of sharks thanks to their rows of razor-sharp teeth, the changing waters might be rendering the creatures from “Jaws” a little less fearsome. Growing acidity in the ...

>>EWAT 7 TO AGE AND CLU COULD BE HIDING RIGHT BENEAT YOUR FEET. DING RIGHT BENEAT LOCALCITISTS ARE USG THESFOILS FOUNIN TH GULF TLEARN MORE ABOUT ANS TH MAY HAVE LIVED HERE MILOFYEARAGO. >> IN TOGHT'S ...

Sharks may not be the sharp-toothed silent type after all. The clicking of flattened teeth, discovered by accident, could be “the first documented case of deliberate sound production in sharks,” ...