WOMEN have suspected it for millennia, and scientists have finally proved it - men cannot have both big brains and big testicles.
Brainiacs and scholars everywhere may gnash their teeth, but according to a recent study of bats, nature forces the males of a species to make a painful trade-off between mental capacity and sperm production.
Big brains mean 'tiny testicles' - The Other Side - Breaking News 24/7 - NEWS.com.au
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