How this robot climbs walls using snake scales

What happens when you put snakes on a plane? No, not with Samuel L. Jackson – on a steep inclined plane. Generally, the animals will begin to slide down. But they can halt their fall by actively changing the positioning of their scales to increase friction. Knowing this has allowed robotic engineers to build better… » 3/21/12 1:51pm 3/21/12 1:51pm