Developing countries have started taking greater responsibility for their own welfare, leveraging private investment to create economic opportunity.

Orphaned in a massacre in Congo, a onetime elementary school dropout is now an American and can teach us something about resilience.

Beijing’s climate and trade pledges at the U.N. highlighted how modest moves can stand out when the United States is pulling back from global leadership.

Chikungunya, which can disable victims for years, is spreading rapidly, including in China, France and other places that have not seen major outbreaks before.