Population growth and aging are fueling a spectacular rise in noncommunicable diseases, such as cancers and cardiovascular diseases, in poor countries that are ill-prepared to handle them. 

Health and infectious diseases have shaped the history of urbanization, but it is cities that will define the future of global health.

Migration is seen as the product of desperate circumstances, but increasingly it is the byproduct of success—improved child survival followed by a booming young-adult population.

An in-depth, multimedia look at the history of the Israeli-Palestinian conflict and its geopolitical repercussions.

An interactive, multimedia guide to the dispute between North and South Korea.