Away from the lights and fountains of the Las Vegas Strip, bulldozers are working overtime as the suburbs of Sin City are bursting out of their seams. Las Vegas is growing at a staggering rate. Clark county, where the city is located, is home to roughly 2.3 million people, but forecasts predict the population could go beyond 4 million by 2055. … But balancing growth and climate change has posed a formidable challenge. Last year temperatures hit 116F (46.6C) in June, setting a new record for such dangerously hot weather so early in the year. Concrete cooked during the day, spitting out heat long after the sun set. … The county is also grappling with a quickly waning water supply …