Where are the best places and when to search for shark teeth? Why are some blackish and some brownish? How old are they ...

PORTLAND, Maine — Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean's chemistry could put those ...

Growing up, I never loved jewelry. But I’ve been wearing the same necklace for the past year: a wrapped lemon shark tooth that I found on Wrightsville Beach, which never fails to act as a conversation ...