Though an estimated 60 million people around the world have atrial fibrillation, or A-fib, a type of irregular and often fast heartbeat, it's been at least 30 years since any new treatments have been ...

Detecting the faint energy of a human heart beating beneath 10 feet of brick and concrete is a signal-processing feat that almost defies the imagination. Yet that is exactly what rescuers did for four ...

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 ...

Miniature-sized heart chambers called ventricles have been 3D printed with live human heart muscle cells and shown to beat on their own for at least three months. Artificial heart tissue can be made ...