True or false: Cotton is less environmentally friendly than polypropylene. Wool is less sustainable than polyester.
Both are true, according to a new index that aims to measure the environmental impact of apparel making.
An industry group called the Sustainable Apparel Coalition is preparing to release a prototype of what it calls the Higg Index, which will allow brands, factories and chemical manufacturers to score the relative sustainability of their products. Eventually, it aims to provide the data to consumers, perhaps on clothing hang-tags or websites.