How a finely tuned pair of nostrils keeps the US space corps from stinking to high heaven.: “Even a little bit of air pollution can turn into a major problem in the cramped quarters of a space vehicle – silent but deadly. At the White Sands Test Facility in New Mexico, NASA odor-testing panels mount ‘smelling missions’ to determine whether something on board a spacecraft will convey that not-so-fresh feeling. Their method: Stick some guy’s nose in it.” —Wired