An Air Purifier Designed For the Space Station Must Be Good Enough For Your Home

If there's one place on—or off—the Earth where the air has to be clean, it's on the International Space Station. That's why many years ago Nasa developed a revolutionary purifying system for the ISS that has since trickled down for use in hospitals, food packing plants, government offices, and now your home. »3/18/13 5:20pm3/18/13 5:20pm