Geckos cling to walls and ceilings by means of microscopic hairs on the undersides of their feet. (discovermagazine.com)
Geckos employ dry adhesion, using a combination of microscopic hairs on their toe pads, as well as other aspects of internal anatomy, to climb vertical walls and run across ceilings, a skill that has long fascinated scientists. (sciencedaily.com)
Microscopic hairs called cilia, which line the nasal passage, help to keep out pathogens and dust that may infect or irritate the lungs, and the cilia work more efficiently when incoming air is moist. (scientificamerican.com)