A fish built from human heart cells that swims like a zebrafish could teach us how the human heart functions. The human heart can pump without signals from the brain, a feature known as automaticity.

Photoshop CC tutorial showing how to create a heart monitor screen with heartbeat blips and custom shapes. Subscribe!

"Redefining how the heart functions is one of the first steps that could lead to revolutionary approaches to treating patients who have heart failure - 5 million and growing in the U.S. - or better ...