How To Cake It Yolanda Gampp takes a heartbreak spin on a traditional Valentine's Day cake with this super realistic deep red velvet human heart cake filled with a rich burgundy chocolate ganache.

(Image credit: Red blood cells diagram via Shutterstock) Capillaries are tiny, averaging about 8 microns (1/3000 inch) in diameter, or about a tenth of the diameter of a human hair. Red blood ...

Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

Using the plant like scaffolding, scientists built a mini version of a working heart, which may one day aid in tissue regeneration. 0:46 Transforming a Spinach Leaf Into Beating Human Heart Tissue ...

Just eight days after Batson received the BiVACOR, a human heart unexpectedly became available. He got the heart of a 34-year-old in mid-July.