When you search YouTube for how to crack a Brazil nut, the top video shows someone cracking it open with a hammer. That gives you an idea of the strength of George Washington's jaw, considering he was ...

To say spotted ratfish are unusual is an understatement. Related to sharks, they abound in the inky dark depths of the Puget Sound. Armed with a venomous fin, they swim gracefully along the sea floor ...

If you've been staring at your teeth and thinking they could stand to be a little brighter, don't impulsively start a ...

Spotted ratfish, or “ghost sharks,” have forehead teeth that help them grasp onto mates. It’s the first time teeth have been found outside of a mouth.