RoboBee is an insect-shaped robot with a wingspan of 1.2 inches (3.0 centimeters). When it flies, its wings beat 120 times each second. Find out more in Robots, a title in the Designed by Nature series. Designed by Nature is a series of AV2 media enhanced books. A unique book code printed on page 2 unlocks multimedia content. These books come alive with video, audio, weblinks, slideshows, activities, hands-on experiments, and much more.