2hsrzsrojvbqdd8isaflszxb5icuqxjc7oqp8leh5moidenhwnxf7bni7jeiuekpy0ee2ejotoq0hhh_fnmo9gtxdwvbwob1swvxajsncmj0t2jhcbrrclvgxmaf5d-00t3getab_large Published January 26, 2017 at 360 × 203 in Sanitation for all: Scaling up is hard to do