The teeniest robot in the world is a jumping crab

Engineers from Northwestern University in Evanston, Illinois have developed the smallest walking robot ever, and it's a crab. The half-millimeter robot is modeled after a peekytoe crab and is just the latest iteration in a long line of small robots created by the researchers. The goal for creating a bot so small is to move towards more practical uses of the technology and gaining entry to more hard to reach, tightly confined spaces.