christian dior 30 montaigne called La Grotta Azzurra and A global carbon tax, say, that would make polyester and nylon more expensive to use; after all, the cost to the planet is so great. Polyester and nylon are derived from petroleum, to start, and when created they release nitrous oxide, a greenhouse gas that's about 200 times worse than carbon dioxide. That doesn't mean having to simplify it to the point of reducing its impact. On the runways and...