Upcycling is a component of sustainability in which waste materials are used to provide new products. It is generally a reinvestment in the environment. "Upcycling is the practice of taking something that is disposable and transforming it into something of greater use and value." This process allows for the reduction of waste and virgin material use.
The term upcycling was coined by William McDonough and Michael Braungart, authors of Cradle to Cradle: Remaking the Way We Make Things.