"If you're worried about dressing ethically, chances are you think about sweatshop conditions in developing countries, unsustainable farming practices, convoluted global supply chains that ring up a huge carbon footprint, and mountains of fast-fashion festering in landfill. But the first thing you should think about is how often you wash your clothes. It turns out that when you look at the whole life cycle of a piece of clothing, everyday washing and drying damages our natural environment the most."