A team of University of Toronto Engineering researchers has developed a flexible foot pad for the “Hopcopter”—a one-legged, hopping robot they developed—significantly enhancing its performance on sand, ice and other difficult terrain.A team of University of Toronto Engineering researchers has developed a flexible foot pad for the “Hopcopter”—a one-legged, hopping robot they developed—significantly enhancing its performance on sand, ice and other difficult terrain.[#item_full_content]