Earlier this year, Rod Stewart married model Penny Lancaster, promising to love and honor the latest version of his eerily uniform young-blonde-wife prototype. The new Mrs. Stewart is younger than Stewart's own young daughter, and at this rate, it's hard to believe the deeply lined rocker won't end up dating his own distant, blonde descendants. But it turns out, Rod, you are to be thanked. And the pre-menopausal ladies you callously jilted? They should thank you most of all. No, not because they don't have to sleep with you anymore, but for something much more important. Scientists say, in not exactly these words, that it is the old goats who keep the human race alive for longer... More at The Huffington Post.