In these scary economic times, older workers are putting off their retirement and hanging on to a paycheck. Some retirees struggling to make ends meet are scanning help-wanted ads for the first time in years.
Throughout most of human history, you didn’t get some unless you had some. More precisely: it was wealthy, powerful men who scored the most sexual mates and, therefore, fathered the most offspring. Men with less wealth and low standing, meanwhile, died disproportionately childless.