Sure, you've got an iPod Nano in your pocket and a VIA Nano in your custom PC, but we're willing to bet you don't have any nanomachines in your arteries at the moment. Two scientists from the Universities of Sheffield and Barcelona, Ramin Golestanian and Pietro Tierno, hope to change that by turning your bodily fluids into pathways for their tiny devices. The things are comprised of two beads, meas
