Motorized nanobot helps sperm reach egg Here’s a novel idea for treating infertility caused by poor-swimming sperm: Attach a motor to them. In an article published in the American Chemical Society journal Nano Letters, researchers describe the “spermbot”—a metal helix controlled by a rotating magnetic field that can wrap around a sperm’s tail and propel it through a fluid chamber. Source: http://www.sciencemag.org/news/2016/01/video-motorized-spermbot-helps-sperm-reach-egg | Oxford University Sc