These are the four key questions that a new World Bank initiative set out to answer. This initiative, the Water Supply, Sanitation, and Hygiene (WASH) Poverty Diagnostic, encompasses 18 countries, ...

It's a win-win, and it's why everything on iStock is only available royalty-free — including all A4 Paper images and footage. What kinds of royalty-free files are available on iStock? How can you use ...