Vacuum packing preventing the evaporation of volatile components. It is also commonly used to store dry foods over a long period of time, such as cereals, nuts, cured meats, cheese, smoked fish, coffee, and potato chips (crisps). On a more short term basis, vacuum packing can also be used to store fresh foods, such as vegetables, meats, and liquids, because it inhibits bacterial growth. Vacuum packing greatly reduces the bulk of non-food items. For example, clothing and bedding can be stored in bags evacuated with a domestic vacuum cleaner or a dedicated vacuum sealer. This technique is sometimes used to compact household
Packing for Mars several years working as a freelance copy editor and investigating unpopular topics. Roach explores lots of questions such as what happens after we die, what sex is all about, and what secrets human cadavers hold. However, in "Packing for Mars", she turns her mind toward space and examines the logistics of space travel. In an interview, she describes her book to be about all the surreal physical and physiological challenges of living in space as a human being. Roach explains that in addition to these problems, human beings are not in the slightest equipped or prepared to confront these challenges.