Names carved into a wall at Eton College boarding school, UK.

Caucasian girl showing drawing on paper

Swarm of micro-robots David Bruemmer, left, and Mark McKay testing a swarm of micro-robots at the INEEL Robotics Laboratory, Idaho Falls, ID. The scientists hope to use a swarm of robots to investigate builings that are contaminated with radioactive waste. The markings show the pattern of the robots and illustrate how a group can cover large areas.