We all know there's a heart in the body; we've been reading about it since childhood. As long as it beats, humans live. Let's ...

Science writer Mary Roach is fascinated by the human body, especially, she says, the "gooey bits and pieces of us that are performing miracles on a daily basis." Take the human heart, for instance. If ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: A study reveals the beginning of understanding of the ...