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 ...

The most comprehensive cell "atlas" of the developing human heart to date was crafted using cutting-edge technology and includes never-before-seen cell types. When you purchase through links on our ...

In 4 B.C., Aristotle identified the three-chambered organ as the center of vitality. The heart served a dual purpose: breathing physical life and something more spiritual. By the second century, Greek ...

During his regular checkup, a 9-year-old clouded leopard named Masala undergoes a procedure to get a tiny heart monitor implanted under his skin at the Smithsonian's Conservation Biology Institute in ...