If the sight of a skittering bug makes you squirm, you may want to look away — a new insect-sized robot created by researchers at the University of California, Berkeley, can scurry across the floor at nearly the speed of a darting cockroach. Small-scale robots like these could be advantageous in search and rescue missions, squeezing and squishing into places where dogs or humans can’t fit, or where it may be too dangerous for them to go, said Yichuan Wu, first author of the paper, who completed