Accident Hump USA 2007 (IMAGE) Max-Planck-Gesellschaft Caption Fatal Recklessness: with production of male hormones in puberty at its highest level, the probability for a boy in the U.S.A. to die in the year 2007 rose from 2 out of 10,000 at age 13 to more than the sevenfold at age 21 (i.e. 15 out of 10,000). Credit MPIDR, Human Mortality Database www.mortality.org Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.