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 ...

Your heart pumps blood from your head to your toes, provides cells with fresh oxygen, and removes waste products. Located in ...

When the human body gets hurt, most tissues heal—skin closes over a wound, bone heals itself. But not all organs heal that ...

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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Each human is a ...

University of Cambridge scientists have used human stem cells to create three-dimensional embryo-like structures that ...

Smithsonian biologists are using heart monitors designed for humans to study how high stress levels in animals can hinder ...