"Why do some societies fare well, and others poorly, at reducing the risk of early death? Wealth, Health, and Democracy in East Asia and Latin America finds that the public provision of basic health care and other inexpensive social services has reduced mortality rapidly even in tough economic...

Until the early decades of the 20th century, women spent more than 60% of their prime-age years either pregnant or nursing. Since then, the introduction of infant formula reduced women's comparative advantage in infant care, by providing an effective breast milk substitute. In addition, improved...