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...have the allele. The results suggest that learning - though influenced by dopamine - is a complex process that involves much more than one kind of brain receptor. "It's just one factor that may contribute to some problems that might arise in some people," says Markus Ullsperger, a co-author of the Science paper, based at the Max Planck Institute for Neurological Research in Cologne. "I think you can compensate for many things without even noticing." In fact, a huge number of people have the genotype that Ullsperger studied, and never have trouble learning from their mistakes: About 30% of Europeans...
...This is a public health problem, and public health problems require policies that actually reinforce positive choices," says Dr. Kirsten Bibbins-Domingo of the University of California, San Francisco, a principle author of one of the NEJM studies. "We know that healthy nutritious foods and physical activity are really the keys to preventing excessive weight gain in childhood. We need a concerted effort at the federal, state and local level - across government and industry - to ensure that those things are available to our children...
...Danish citizens born between 1930 and 1976, researchers found a distinct correlation between higher childhood body mass index (BMI) - the ratio between height and weight that is the standard for defining obesity - and a greater risk of future heart disease and heart disease-related death. According to the authors, it is the first study to conclusively link excess weight in childhood and health problems later on. What's more, the data showed that the correlation is linear and progressive: as kids' BMI increased, their risk of adult heart disease rose alongside it. "We anticipated finding a threshold...
...long-distance relationships and the rise of destination weddings (about 25% of unions in the U.S.), more couples are getting hitched on the Net. We talked to three: one streamed video of the live ceremony, another actually wed via webcam, and the third got virtually married online. Anna Post, author of Emily Post's Wedding Parties, weighs in on the proper etiquette (no gifts required!) for when guests--or even the bride and groom--can't show up in person...
...author doesn't tip his own hand, alas. Rogers doesn't reveal his personal holdings but gives the would-be investor dozens of possibilities, which range from the more predictable (Dongfang Electrical Machinery Co., a generator company) to the more exotic (Zhejiang GuYueLongShan Shaoxing Wine Co., a maker of traditional rice wine). Studying, says Rogers, will pay off: "If you do your homework, buy cheap and remain patient, you should be able to walk over and pick up that pile of cash in the corner that nobody else notices...