New York City has some of the best tap water in the world. So good, in fact, the EPA says it doesn’t even require filtration. So how do you get eight million New Yorkers, constantly on the go, to give up the convenience of disposable water bottles and drink from the tap? GreeNYC the branch of Bloomberg’s administration charged with promoting sustainability, came up with a cute mascot–Birdie–and a clever idea: portable drinking fountains that attach to fire hydrants. Read the full story in our current issue.