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A fundamentalist Mormon sect living along the Nevada-Arizona border has a serious problem with a rare genetic disorder, because everyone is closely related to everyone else: “With polygyny you’re decreasing the overall genetic diversity because a few men are having a disproportionate impact on the next generation,” says Mark Stoneking, a geneticist at the Max Planck Institute for Evolutionary Anthropology, Germany. “Random genetic mutations become more important.” In isolated communities, the problem is...

Too many things showed up in my RSS feeds this morning. Fortunately, I've got a few days off this weekend and next. Jerry Seinfeld got some time with President Obama Catfish are cleaning up the Chicago River Book early to take advantage of airline schedule changes What you should ask about every new job Apollo got a pretty good review All blue-eyed people apparently have one common European ancestor And now, a conference call.