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...choice in terms of genes - either on one X chromosome or the other. Consider it this way: you have a population of cells, all aging together. In some cells, the genes on one X chromosome are active; in other cells, by chance, the same set of genes, with different variations, are active on the other X chromosome. Don't forget, we all have the same genes - the reason we differ is because we express different variations of those genes, like different colors of a car. Now, if one set of variations provides a survival advantage for the cells versus another...
...protect workers' hearing in noisy work environments. What was found is that when people are exposed to a certain level of noise every day for a certain duration, they're going to have a certain degree of hearing loss on average. But the amount of hearing loss might differ by as much as 30 dB between people who had the toughest ears and those with the most tender ones - a huge variation. Unfortunately, we don't know who has the tougher ears and who has the tender ones until after they've lost their hearing. So, as a clinician...
...takes some serious work to figure out what they are actually getting at. Neither candidate has laid out an actual plan, with specific numbers, to bring America's fiscal house into order. They do, however, offer plans that differ strikingly from each other. McCain's tax plan benefits mostly those in higher income brackets, while Obama's plan benefits mostly those in lower- and middle-income tax brackets. McCain wants a tax cut for corporate profits, while Obama has proposed a whole host of tax cuts that will benefit those in the middle-income brackets. Both candidates have new spending...
...thought the traditional Jewish matchmaker went out of style with Fiddler on the Roof, SawYouAtSinai.com has 35,000 love-seeking, Orthodox Jewish singles who beg to differ. Online dating sites are nothing new, but unlike eHarmony and its nameless algorithms, SawYouAtSinai employs an army of actual, flesh-and-blood matchmakers, charged with scouring the site's database in search of potential soulmates...
...bodyguard, following the al-Qaeda leader when he relocated for security reasons to Tarnak Farms, a walled compound 30 minutes outside Kandahar. According to both al-Bahri and fbi interrogator Ali Soufan, Hamdan had bin Laden's trust but was not a member of his inner circle. Their accounts differ when it comes to Hamdan's level of involvement with al-Qaeda. Al-Bahri characterized him as a circumstantial participant, someone with limited options who just needed a job, while Soufan said he was undeniably part of the al-Qaeda conspiracy, pointing out that Hamdan swore a bayat, or oath...