Researchers report a "serendipitous" discovery while watching videos of crowds: an inexplicable bias toward counterclockwise turning that may be rooted in biology.

Researchers report a "serendipitous" discovery while watching videos of crowds: an inexplicable bias toward counterclockwise turning that may be rooted in biology.

Researchers in Spain and Japan tested a broad range of pedestrians in varying group sizes to see whether there were any patterns to their turning behaviors, and what factors…