i******e
发帖数: 171 | 1 Science, Vol 309, Issue 5741, 1662-1663 , 9 September 2005
News of the Week
EVOLUTION:
Are Human Brains Still Evolving? Brain Genes Show Signs of Selection
Michael Balter
We humans are proud of our big brains, and rightly so. Averaging 1350 cu
bic centimeters (cc), the human brain is proportionally larger than that
of any other animal. Its highly advanced cognitive powers have spurred
us to create art, build cities, and send representatives of our species
into space. Just why natural selection b |
|
