So the Palazzo Las Vegas has achieved Silver LEED certification, meaning that it has greatly reduced energy and water usage over a regular building, including solar-heated swimming pools, lighting sensors, and waste and materials recycling. On the other hand, given that there’s a Lamborghini dealership and dozens of high-end boutiques onsite, it’s hard to say that this is really environmentally friendly. I don’t really have a quarrel with the LEED system itself; it’s designed to work on buildings, not what people do inside them. It’s just hard to associate anything about overconsumptive Las Vegas with being green.