Discovery News reports:
Scientists have taken the first steps in reproducing the biological engine that powers a sperm's tail and modified it for use in nano-sized devices.
The tiny biological machine is something like a car engine that uses fuel to generate motion.
Only this machine -- composed of 10 carefully arranged enzymes -- runs on natural sugars, using them to produce an high-energy molecule called adenosine triphosphate, or ATP for short.
In the case of sperm, ATP energizes the tail. But it could also be used in nanorobots that do everything from activate drug-delivery pumps to manufacture missing enzymes necessary for healthy bodily functions.
So that's how the little bastards get from there to here.