Skulls (image) North Carolina State University Caption A forthcoming study from North Carolina State University, which examined hundreds of Spanish and Portuguese skulls spanning four centuries, shows that differences in the craniofacial features of men and women have become less pronounced. Credit David Hunt, North Carolina State University Usage Restrictions Photo credit must be given. 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.