Genome-wide association studies have identified many variants affecting susceptibility to disease. Now, three studies use this approach to study adult height variation in a combined sample size of ?63,000 individuals and report a total of 54 validated variants influencing this trait.
Democrat Barack Obama's appeal to  centrist voters has further opened the door to Republican claims his message of change only applies to the positions he has taken in the past.
AP - Iran indicated Saturday that it has no plans to meet a key Western demand that it stop enriching uranium, a day after Tehran sent the European Union a response to an international offer of incentives for halting enrichment.
AP - The call girl involved in a scandal that brought down New York's former governor has dropped a lawsuit claiming "Girls Gone Wild" founder Joe Francis exploited her image and name on the Internet.
