Facts about breastfeeding
We produce a numerical estimate of the value of unpaid breastfeeding relative to national income spanning five centuries and integrating historical and bioarchaeological data. The relative economic contribution of maternal nursing was greater in the distant past than in recent history, rivaling regionally significant industries such as pottery, glassmaking, and even the historical public sector.…
We haven't written up this one. Marginal Revolution has the full story — the link below goes straight to it.