|12-11-2007, 03:50 PM||#1|
Join Date: Dec 2002
Human Evolution Speeding Up, Study Says
for National Geographic News
December 11, 2007
Explosive population growth is driving human evolution to speed up around the world, according to a new study.
The pace of change accelerated about 40,000 years ago and then picked up even more with the advent of agriculture
about 10,000 years ago, the study says.
And while humans are evolving quickly around the world, local cultural and environmental factors are shaping
evolution differently on different continents.
"We're evolving away from each other. We're getting more and more different," said Henry Harpending, an anthropologist
at the University of Utah in Salt Lake City who co-authored the study.
For example, in Europe natural selection has favored genes for pigmentation like light skin, blue eyes, and blond hair.
Asians also have genes selected for light skin, but they are different from the European ones.
"Europeans and Asians are both bleached Africans, but the way they got bleached is different in the two areas," Harpending said.
He and colleagues report the finding this week in the journal Proceedings of the National Academy of Sciences.
The researchers' analysis found that 7 percent of human genes have been undergoing rapid, recent evolution.
If humans had always evolved at this rate, the difference between modern humans and chimps should be 160 times greater than it really is.
|12-11-2007, 05:58 PM||#6|
High-Priced Free Agent
Join Date: Jan 2005
This whole thread is BS. Evolution and/or Natural Selection is just a "theory" cooked up by satan to deceive humans...
|12-11-2007, 06:45 PM||#7|
Join Date: Apr 2004