Researchers from the University of Tokyo have successfully attached living skin tissue to robotic faces, enabling them to “smile.” What Happened: The smiling robot, featured in a study published by Cell Reports Physical Science, is the culmination of a decade-long research by Shoji Takeuchi and his team on the fusion of biological and artificial machines, reported Reuters. The scientists cultivated human skin cells in the form of a face and manipulated it into a broad smile using ligament-like attachments. Living tissue, Takeuchi pointed out, has several benefits over metals and plastics, such…