Here at my biz travel home away from home, the Hyatt, I've become so used to the little "conserve" sign in the bathroom I hardly notice it anymore. It's one of the few eco-programs most hotels have put into practice: asking their guests to reuse their towels so the hotel can save water and energy. It's nice to see a simple idea go mainstream, but I'm a little green greedy. I'd like to see a few other environmental habits be de rigueur for the industry. Here are a few on my list: Which do you think are the most important?