And I want to recognize in absentia John and Janis Ruan, the generous sponsors of the World Food Prize, who were unable to join us here today.

我还要感谢今天缺席的约翰和贾尼斯·阮夫妇，他们是世界粮食奖慷慨的赞助人，今天因故不能参加我们的盛会。

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Work by Charles Nunn, John Gittleman and Janis Antonovics at the University of Virginia in Charlottesville, published in this week's Science, shows that primate species that usually have many mating partners also have more white blood cells and possibly different immune responses from those that are monogamous.

ECONOMIST: Promiscuity pays