Web address: http://www.sciencedaily.com/releases/2012/08/120827152037.htm Holly Dunsworth. (Image courtesy of University of Rhode Island) ScienceDaily (Aug. 27, 2012) — New research by a University of Rhode Island professor suggests that the length of human pregnancy is limited primarily by a mother’s metabolism, not the size of the birth canal. The research, published in the Proceedings of the National Academy […]