Non- Maternal Urges Linked to Higher IQ 
I found this article interesting because as we all know Susan B. Anthony and Elizabeth Cady Stanton were opposites, but they balanced each other out. They were both intelligent and strong-willed women. One had no children, and one had seven. I can see where the study explained in the article has a tiny bit of truth, but I think a lot of factors were excluded, such as age or socioeconomic status. Also, I think the idea that women are solely baby factories is slowly dying... well hopefully.