An artificial heart that took 15 years to develop has been approved for human trials. The device, which was fashioned from biological tissue and parts of miniature satellite equipment, combines the latest advances in medicine, biology, electronics, and materials science.
When we see total artificial hearts in science fiction, they are usually metal-and-plastic versions of what we have now, small pumps that magically attach to arteries. But two medical researchers have successfully created working artificial hearts — and they don't beat. They hum.