The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Originally appeared on the NOVA Web site Cut to the Heart. Sure, you know how to steal hearts, win hearts, and break hearts. But how much do you really know about your heart and how it works? Read on ...

Technically, your heart isn't made of gold. And don't wear it in on your sleeve—you’ll make a mess! Just in time for ...

Sure, you know how to steal hearts, win hearts, and break hearts. But how much do you really know about your heart and how it works? Read on to your heart's content! Put your hand on your heart. Did ...