Quantcast
Last updated on April 17, 2014 at 10:53 EDT

Latest Holly Dunsworth Stories

Metabolism Key To Length Of Human Pregnancy
2012-08-28 08:35:17

April Flowers for redOrbit.com - Your Universe Online It's not all in the hips, baby. The length of human pregnancy is limited primarily by a mother's metabolism, not the size of the birth canal, suggests a new study from the University of Rhode Island. This new research, published in the Proceedings of the National Academy of Sciences, challenges the long-held notion of an evolutionary trade-off between childbirth and a pelvis adapted for walking upright. Big brains and the...