The uber-hot outdoor clothing company Nau, which focuses on sustainable and ethical clothing and a new business model as well, is now open in Chicago. Not to mention the fact that their clothes don't look like the neo-hippie earth tones of typical outdoor equipment manufacturers — this stuff can be worn to a club after you're done climbing that rock face. The Chicago retail store (one of four across the country) opened this morning. Where are they? 2118 North Halsted.