Santa Marta, shown in the foreground, is one of Rio de Janeiro's most notorious slums. Officials are trying to stem crime and violence there through a community-based approach to policing. Peter Breslow/NPR hide caption

Relief organizations estimate that 45 percent of the roughly 9,000 people at the Mazrak camp in northwestern Yemen brought livestock with them — mostly goats, sheep, cattle and donkeys. But the sudden change from the cooler mountain climate to the harsh temperatures at Mazrak is taking its toll; one relief group estimates mortality for the animals at about 15 percent. This photo shows a dead baby goat next to a tent housing displaced people. Peter Kenyon/NPR hide caption