http://www.popularmechanics.com/science/environment/the-first-gear-discovered-in-nature-15916433 With two diminutive legs locked into a leap-ready position, the tiny jumper bends its body taut like an archer drawing a bow. At the top of its legs, a minuscule pair of gears engagetheir strange, shark-fin teeth interlocking cleanly like a zipper. And then, faster than you can blink, think, or see with the naked eye, the entire thing is gone. In 2 milliseconds it has bulleted skyward, accelerating at nearly 400 g'sa rate more than 20 times what a human body can withstand. At top speed the jumper breaks 8 mphquite a feat considering its body is less than one-tenth of an inch long.
