World population is projected to increase from 7.3 billion today to 9.6 billion or more by 2050. Virtually all that growth will be in the developing world, and much of that increase will occur in countries struggling to alleviate hunger and severe poverty. Many countries with rapidly growing populations are threatened by water scarcity or deforestation; others are struggling with conflict or political instability. While progress is not precluded, population growth in these countries is a challenge multiplier.
Find out where population growth poses the greatest challenge: