This robotic face expresses anger, joy, and other emotions based on the movements of a slime mold. But what does a grinning robot teach us about these remarkable organisms?
Slime molds are single-celled organisms that work together as a larger creature, and that creature has shown some incredible behaviors and abilities, including solving mazes faster than robots do. Ella Gale, who researches neuromorphic and unconventional computers, is currently researching Physarum polycephalum, a common yellow slime mold. One of the ways that she's studying it is with this expressive robot.