Word: childrened
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...selection of fitter traits is no longer driven by survival, perhaps it owes to differences in women's fertility. "Variations in reproductive success still exist among humans, and therefore some traits related to fertility continue to be shaped by natural selection," Stearns says. That is, women who have more children are more likely to pass on certain traits to their progeny. (See the top 10 scientific discoveries...
...residents of Framingham, Mass., since 1948. Investigators searched for correlations between women's physical characteristics - including height, weight, blood pressure and cholesterol levels - and the number of offspring they produced. According to their findings, it was stout, slightly plump (but not obese) women who tended to have more children - "Women with very low body fat don't ovulate," Stearns explains - as did women with lower blood pressure and cholesterol levels. Using a sophisticated statistical analysis that controlled for any social or cultural factors that could impact childbearing, researchers determined that these characteristics were passed on genetically from mothers to daughters...
...fertility - as measured in the Framingham study - is a much less important factor in human evolution than differences in male fertility. Sperm hold a much higher chance of carrying an error or mutation than an egg, especially among older men. "While it used to be that men had many children in older age to many different women, now men tend to have only a few children at a younger age with one wife. The drop in the number of older fathers has had a major effect on the rate of mutation and has at least reduced the amount...
...walk to the train station together after meeting for the first time, a trio of rowdy soldiers joking in the background goes a long way in placing the timeless sentimentality of such a encounter in 1927. Wherever Earhart stops for fuel, the camera lingers in close-up on the children who greet her. Her feats inspired a nation in a way that modern figures rarely can, and the children she meets—including a young Gore Vidal—function as silent narrators of her story...
...character is Eliza, a West Village misfit and ex-writer-turned-mommy trying to maintain a marriage, two children, and some semblance of creative vitality—not to mention sanity—amidst the chaos that is the existence of a stay-at-home mom. The film follows Eliza through an exceptionally tumultuous day of blogging, blacktops, and birthday preparations...