Len Fisher, Ph.D., is author of The Perfect Swarm; Rock, Paper, Scissors; Weighing the Soul; and the prize winning How to Dunk a Doughnut. He lives in Wiltshire, England, and Blackheath, Australia.
Len Fisher is an author of popular science, and his How to Dunk a Doughnut was named Best Popular Science Book of the Year by the American Institute of Physics.