The men have finally figure out why pregnant women don't tip over!

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And to think that they had to spend so much time and money to figure out what we women already knew... That carrying weight in the front is harder than carring it from the bottom! Holding it out or hanging it down! Gee whiz, and to think they needed chimpanzees to make them see the obvious! http://news.yahoo.com/s/livescience/20071212/sc_livescience/womenevolvemorespinetocarrybabies