Japan's constitutional debate is about not simply the document's past but also the nation's ability to respond to twenty-first-century challenges.

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. 

An in-depth, multimedia look at climate change, its global impact, and efforts to combat it.

Peace negotiators often overlook a proven strategy to reduce conflict and advance stability: include women.