25% of the world's food supply is lost to spoilage, often because of poor preservation: a gigantic waste that could be reduced if we were to adopt different kinds of packaging. For this reason Fenugreen, a company in Massachusetts, has invented FreshPaper, a sheet of paper made from organic material that inhibits the growth of bacteria, fungi and the like, making the food last longer. All you need to do is place a sheet of FreshPaper in the containers in which it is refrigerated, and the food will keep two or four times longer. A sheet lasts from two to three weeks and, at the end of its life, can be thrown on the compost heap.
For the moment, it can be found in the supermarkets of the American Whole Foods chain.