Now, my question is, did women evolve intra-species, evolve from a different species and differently from men, or were they created that way from the beginning?Evolution keeps pregnant women upright
WASHINGTON (AP) -- Scientists think they have figured out why pregnant women don't lose their balance and topple over despite ever-growing weight
Evolution provided slight differences from men in women's lower backs and hip joints, allowing them to adjust their center of gravity, new research shows.
This elegant engineering is seen only in female humans and our immediate ancestors who walked on two feet, but not in chimps and apes, according to a study published in Thursday's journal Nature.
"That's a big load that's pulling you forward," said Liza Shapiro, an anthropology professor at the University of Texas and the only one of the study's three authors who has actually been pregnant. "You experience discomfort. Maybe it would be a lot worse if (the design changes) were not there."
Harvard anthropology researcher Katherine Whitcome found two physical differences in male and female backs that until now had gone unnoticed: One lower lumbar vertebra is wedged-shaped in women and more square in men; and a key hip joint is 14 percent larger in women than men when body size is taken into account.
"When you think about it, women make it look so very damn easy," Whitcome said. "They are experiencing a pretty impressive challenge. Evolution has tinkered ... to the point where they can deal with the challenge... (and there's more to the story on CNN)
Adam made women from his rib. We've been doing it ever since. Where did your woman come from?GOODave wrote:Given their preconceived notion (that evolution was involved), they reached a perfectly rational conclusion:
Now, my question is, did women evolve intra-species, evolve from a different species and differently from men, or were they created that way from the beginning?
Human women evolved with human men. The only thing Adam could make from a rib is a tasty lunch.mellin wrote: Adam made women from his rib. We've been doing it ever since. Where did your woman come from?