Health

How studying animal and human disease together could help prevent and treat the next pandemic.

The population of western Europe is aging steadily, and the region's birthrate is well below the replacement level, but Europe's elderly are exceptionally healthy. That means they could be more productive for longer than their predecessors were. If western European governments learn to tap this potential, healthy aging could become the region's next great economic asset.

The influx of AIDS money into global health carries risks, but well-designed programs can improve health care overall; Garrett responds.

Thanks to a recent extraordinary rise in public and private giving, today more money is being directed toward the world's poor and sick than ever before. But unless these efforts start tackling public health in general instead of narrow, disease-specific problems -- and unless the brain drain from the developing world can be stopped -- poor countries could be pushed even further into trouble, in yet another tale of well-intended foreign meddling gone awry.