Rajeev Kher, 28, is on a quest to bring sanitation standards to his native India. And that’s quite a challenge when you realize that 90 percent of Indians living outside major cities still relieve themselves in the open.Kher first saw portable restrooms being used while working in Canada in 1997. He felt introducing portable sanitation was essential for India, which was — and still is — plagued by health problems related to open defecation in poor settlements and urban slums. He knew that until basic sanitation issues were solved, there could be no significant residential or commercial development in his
