Men with deep voices tend to have more children than those who speak at a higher pitch, scientists say. Their finding is based on a group of hunter-gatherers in Tanzania known as the Hadza, who can be studied without bias because they use no birth control. Males who hit lower notes as they talked had about two more children on average than squeaky speakers.

Again the scientists waste time and money on studying the blatantly obvious. I mean, we all knew Michael Jackson was not the biological father of those kids didn't we?