• RiceAtlas, a spatial database of global rice calendars and production
    with A. G. Laborte, M. A. Gutierrez, J. G. Balanza, K. Saito, S. J. Zwart, M. Boschetti, M. V. R. Murty, L. Villano, J. K. Aunario, R. Reinke, J. Koo, and R. J. Hijmans
    Knowing where, when, and how much rice is planted and harvested is crucial information for understanding the effects of policy, trade, and global and technological change on food security. We developed RiceAtlas, a spatial database on the seasonal distribution of the world's rice production. It consists of data on rice planting and harvesting dates by growing season and estimates of monthly production for all rice-producing countries. Sources used for planting and harvesting dates include global…Read more
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    Middle Childhood and Modern Human Origins
    Human Nature 22 (3): 249-280. 2011.
    The evolution of modern human life history has involved substantial changes in the overall length of the subadult period, the introduction of a novel early childhood stage, and many changes in the initiation, termination, and character of the other stages. The fossil record is explored for evidence of this evolutionary process, with a special emphasis on middle childhood, which many argue is equivalent to the juvenile stage of African apes. Although the “juvenile” and “middle childhood” stages a…Read more