Word: factors
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Dates: during 1990-1999
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...many otherwise alert and responsible citizens are so ready to accept the notion that police racism and other acts of discrimination are aberrations rather than commonplace occurrences. And how, in the face of such reports, citizens can nevertheless believe that it is time to disregard race as a factor and take a ''color-blind'' approach to social issues. The Fuhrman tapes effectively refute the claim put forward by conservatives, both black and white, that prejudice no longer has much impact on the lives and fortunes of African Americans. Like most black men, I can testify from personal experience that...
...find the scattered bone bruises that are the skeletal hallmark of "battered-child syndrome." In some modern societies, Walker estimates, such bruises would be found on more than 1 in 20 children who die between the ages of one and four. Walker accounts for this contrast with several factors, including a grim reminder of Hobbesian barbarism: unwanted children in primitive societies were often killed at birth, rather than resented and brutalized for years. But another factor, he believes, is the public nature of primitive child rearing, notably the watchful eye of a child's aunts, uncles, grandparents or friends...
...menacingly around the Soviet continent, ready for immediate deployment in the event of a security crisis. In the age of isolated ethnic and regional conflict, the deterrent value of one additional submarine is virtually nil. In fact, unless the conflict directly involves us, it will not even be a factor...
Friedman picked up the challenge, applying new tools developed by the field of molecular genetics. The secret factor, he reasoned, must be produced by a gene that was defective in the obese mice. So he began to hunt for such a gene, the ob, or obese, gene. Sure enough, late last year, after eight years of effort, Friedman and his colleagues pinpointed the ob gene in both average-weight and obese mice. They then inserted the normal gene into bacterial cells, providing at long last detectable quantities of the protein they called leptin...
...injecting leptin into obese mice, three separate teams of researchers, including Friedman's, have confirmed that this protein is indeed the blood factor that makes fat mice thin. But they are still trying to puzzle out just how it works. Friedman, for one, believes leptin is almost certainly a hormone that travels through the bloodstream to act on the brain. In fact, it appears leptin may act in a feedback loop like the temperature sensor in a thermostat--or in this case a "fatstat"--to tell the body whether to turn metabolism and appetite up or down. Thus when leptin...