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NEW YORK (Reuters Health) – A UK researcher has a new explanation for how the human race manages to keep a fairly even balance of males and females, despite massive deaths of young males in war and selective abortion of female fetuses in certain parts of the world.

http://news.yahoo.com/s/nm/20090101/...MrNdlHhlAPLBIF



The whole war thing holds true for the past, but now men and women go to war and they have been for about 20 years now.