Once dismissed as sticks and forgotten in a museum, the 5,000-year-old tools show prehistoric people hunted whales far from ...

The study found that as acidity increases, shark teeth could become structurally weaker and more prone to cracking and breaking. This could eventually threaten sharks’ position at the top of the ...

Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their ...