Haiti

Cholera has been spreading in Haiti for over four years. But this year looks especially bleak. In the first four months, there were nearly four times the number of cases as in the same period in 2014.

Haiti has long relied on NGOs for aid. But the village of Tuffet is now on the grid — and paying for its power. "It's better when you pay for something," a resident says. "It doesn't go away then."

It's the last day on the job for Rajiv Shah, who at age 36 became the youngest-ever head of USAID. A key figure in the U.S. Ebola response, Shah has his critics, but he's proud of his record.