Snot might not be the first place you'd expect nanobots to be swimming around. But this slimy secretion exists in more places than just your nose and piles of dirty tissues—it also lines and helps protect the lungs, stomach, intestines and eyes. And now, researchers reporting in ACS Nano have demonstrated in mice that their tiny, enzyme-powered "snot bots" can push through the defensive, sticky layer and potentially deliver drugs more efficiently.
