Scientists in Israel have revealed what they say is the world's first 3D-printed heart using human tissue. It's hoped the small heart will pave the way for transplants without donors, when every hospital might have access to 3D organ printers. Faith Lapidus reports.
Most wireless communications use RF or radio frequency communications to send data back and forth. But all that information can slow things down. One National Science Foundation supported researcher is using light to send information, and, as we hear from VOA's Kevin Enochs, it’s quicker and more secure than RF.