Is your heart racing because you’re in love or is it a sign of a more serious heart condition? A cardiologist explains how to spot the difference.

This workout seemed to help the cells mature. Visually, they began to take on the structures of human heart tissue, and the cardiomyocytes beat harder. A genetic analysis showed that these cells ...

they started beating. While this isn't the first time heart tissue has been grown in the lab, it's the closest researchers have come to their end goal: Growing an entire working human heart.

Your heart beats about 100,000 times in one day and about 35 million times in a year. During an average lifetime, the human heart will beat more than 2.5 billion times. Give a tennis ball a good ...

Did you know that your heart beats over 100,000 times a day? Get "heart smart" by checking out these amazing heart facts.

When a heart is taken out of a person, provided it is kept under the very conditions that it needs to be transplanted, it will continue to beat. Why is that? Scientists think new research has ...

Graduate students whiz around this slimy beating heart ... though a pig heart typically has less plaque and yellow, gelatinous fat covering it, she said. Human hearts make for better research ...

Katlyn's heart is now beating correctly ... film offers a depiction of the inner workings of the human eye by combining CGI with a real life story of divers who can see clearly underwater.