In India's polluted northern city of Kanpur, Rajat Ghai has a penchant for Rado watches and Louis Vuitton shoes. Now, as the 31-year-old entrepreneur builds his dream home, he is indulging his ...

The Tucson City Council has approved plans to build a toilet-to-tap-water plant with up to $86.7 million in federal funds. Mayor Regina Romero and councilmembers accepted the agreement ...