This true story of the incredible horse whose smarts stumped all of Berlin and changed science reads like a fabulous STEM mystery. Clever Hans was a horse who c

Can a horse really do arithmetic? For a time a great many people thought so, enthralled by the exploits of Clever Hans, a horse that could seemingly answer any

Hans was in love with a girl named Gretel. They saw each other every day and every time Gretel gave Hans a gift. Hans was however not that smart, so he mishandl