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Origins and Evolution
By | October 31, 2008
P.Z. Meyers at Pharyngula has two great biology posts today, in addition to the political humor cited below. First, Cesarean-Section births may be allowing humans to grow larger brains. Babies have very big heads that squeeze with only great difficulty through a relatively narrow pelvis, so the relationship in size between head diameter and the diameter of the pelvic opening has been a limitation on human evolution. We know this had to be a factor in our evolution: the average newborn mammal
Source:Origins and Evolution
Topics: Hydrogen Fuel Cell |
