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Adult sexual networks look very different and usually involve clusters of wanton individuals known to public-health experts as "core transmitters." (Think prostitutes, NBA stars.) Another surprise was the absence of tightly closed loops in which a foursome trades partners--what co-author Peter Bearman calls the Bob & Carol & Ted & Alice phenomenon, after the 1969 film. Teenagers seem to shy from such post-breakup swaps. Bearman, who heads the sociology department at Columbia University, suggests that dating the former boyfriend of your ex-boyfriend's new girlfriend may involve a loss of status or cross a line of loyalty...
...flood of new shares would drive down prices. Although the government quickly reversed its decision, the markets lost a quarter of their value in three months, and they have kept falling ever since. "Everybody still worries that some day the state will sell those shares," says Fraser Howie, co-author of the book Privatizing China, a history of corporate reform. Little wonder the sunflower-seed eaters at Huaxia Securities find dealing cards more diverting than dealing in shares...
...clinics in the U.S., according to a study from the Center for Bioethics at the University of Pennsylvania School of Medicine, there is no agreement about how prospective parents should be screened. It's a far cry, says Penn's Art Caplan, director of the center and co-author of the study, from what we accept in assessing the fitness of adoptive parents. ART candidates aren't evaluated in any systematic way (except to determine whether they can pay). The study reported that fewer than 20% of ART specialists even bothered with assessments by psychologists or social workers. One-third...
...pilloried because one of the theories he mentioned offended people’s sense of political correctness. Though Summers appropriately faced some academic criticism on the merits of the innate differences theory he mentioned—one sociologist called the remarks “uninformed” and her co-author told The Crimson that the innate differences idea is “too simplistic”—many attacks have misinterpreted the remarks or suggested that the theory of biological differences is an invalid avenue for academic inquiry...
...mammals that got eaten. Inside the skeleton where the animal's stomach would have been are the fossilized remains of a baby dino. "This discovery was the chance of a lifetime," says Jin Meng, a paleontologist at the American Museum of Natural History in New York City and a co-author of the paper. "We can't expect to find things like this again...