Poor countries are starting to realize something that richer ones sometimes forget: Basic, inexpensive measures can have dramatic impacts on the health of a country. And they can save thousands of lives.
Take, for instance, the situation in Ethiopia.
The country used to have one of the highest rates of child mortality in the world.
Rain is so important in Malawi's agriculture-based economy that there are names for different kinds of it, from the brief bursts of early fall to heavier downpours called mvula yodzalira, literally "planting rain." For generations, rainfall patterns here in the southeast part of Africa have been predictable, reliable. But not now.
In the village of Jasi, in the hot, flat valley of Malawi's Lower Shire, farmer Pensulo Melo says 2010 was a disaster.
You don't have to venture far to see the misery caused by the latest crisis in the Central African Republic.
On the edge of the airport in the capital Bangui, tens of thousands of people are sleeping out in the open with no basic services. It's here that Samantha Power, the U.S. ambassador to the United Nations, meets Martine Kutungai with her husband, a pastor, and their eight children.
Kutungai says she's terrified to go home because of the Seleka — Muslim rebels who toppled the government in March.