Word: tends
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...cells had shorter telomeres--bits of DNA that cap the ends of chromosomes. In lab experiments, scientists have shown that telomeres get a bit smaller every time a cell divides, and that when telomeres are worn out, cells can't divide anymore and ultimately die. In humans, older people tend to have shorter telomeres--and by this measure, the most stressed women in the study had cells that looked 10 years older than their chronological age. It's not an open-and-shut case that telomere shortening is the key to aging, says Sapolsky, "but it's the best candidate...
...most stressed women also had lower levels of telomerase, an enzyme that repairs damaged telomeres. Again, reduced telomerase isn't necessarily the key to premature aging, but people with a rare genetic condition that reduces their telomerase production tend to show outward signs of premature aging and often die young of heart disease and weakened infection resistance...
...block prints. The sequence goes from 1 (rhinoceros horn) to 20 (barnacle shells on a whale). Each image is reinforced by a facing page showing the Arabic numeral, the number written out and a brief description of the critter part being counted. As the numbers go up, the images tend to get more complex (16 catfish whiskers, 18 diamond markings on a rattlesnake), but even the simpler ones are ingenious, as in a chameleon's three colors blending into a tricolor scene. After 20, the book takes us back to 1 with a lone humpback whale--an invitation to start...
...latest move by the Governor's team is to threaten the legislature with a redrawing of the districts that elect them. Because the statehouse now determines voting districts, the current map generally ensures that incumbents face minimal challenges to re-election. That promotes the election of politicians who tend toward the extremes of their parties, and the resulting polarity in the statehouse produces gridlock. Schwarzenegger wants to set up a panel of nonpartisan judges to supervise redistricting. If, as expected, the legislature opposes the idea, he is considering going back to the people in a special election...
...inhalers--the so-called rescue drugs--are intended for acute attacks. If your child needs the inhaler more than twice a week, you may be doing something wrong. Daily medications like corticosteroids to reduce inflammation and bronchodilators to control constriction help prevent attacks. Those are the drugs that parents tend to neglect since they don't act immediately and it's therefore tougher to appreciate their benefits...