Smile dimples aren't caused by a dominant gene — a biologist explains the muscle quirk behind them, and two surprising body ...

In one of the most classic scenes in "The Princess Bride," the sword fighter Inigo Montoya, played by Mandy Patinkin, monologues to the Dread Pirate Roberts (Cary Elwes) about why he is so devoted to ...

Rare genetic traits are features that are uncommon within the general population. They can lead to different observable features or to rare physical abilities. Rare genetic traits are typically ...

Humans and their closest primate relatives diverged evolutionarily some 6 to 8 million years ago. Since then, a wide range of traits and behaviors have come to distinguish our species from the rest of ...

"I will go up to the six-fingered man and say, 'Hello. My name is Inigo Montoya. You killed my father. Prepare to die.'" - Inigo Montoya, "The Princess Bride" If the six-fingered man had survived his ...