The Presidential Daily Brief


  1. marriage

    Are We Meant to Be Monogamous?

    Faithfulness may be too good to be true. A new study shows that only nine percent of mammal species and just 17 percent of modern human societies are strictly monogamous. Behaviorists point to evolution for some of our promiscuity — the more offspring you have, with however many partners, the better your chances of passing on your genes. Some believe that the human tendency to cheat may indicate that we’re simply not hardwired to settle down with a single partner.

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