The Las Vegas Strip is known for its opulence, glamour and glitz, for being an adult playground, home to the world’s best known casinos, but now it becoming known for being green and where not being wasteful is a key part of the City’s business model. Sin City has been reinventing itself and is has become a model town of sustainability. Las Vegas is struggling to meet the water and energy demands of its 500,000 plus residents, which excludes the 40 million tourists who visit every year. Nevada is one of seven states that is dependent on the over-stretched Colorado River for its water supply, which is one of the most heavily plumbed and litigated river systems in the world. It is a critical reservoir for tens of millions of agricultural and municipal users from Wyoming to the Mexican border. The river is now in a very serious condition and the death of the river system will have huge implications for every resident, visitor and business in Las Vegas.