One of the key components of empathy is what scientists call facial mimicry. It seems complicated, but is as simple as smiling when someone smiles at you, and that conveys a lot of information. Scientists have always thought that animals who do it, humans included, are a small group, but maybe not. VOA's Kevin Enochs reports.
Operating down to 450 meters with manned submersibles and underwater drones off the island nation of the Seychelles, the scientists were the first to explore areas of great diversity where sunlight weakens and the deep ocean begins
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.