A: Their brains

WOMEN USE BRAINS MORE EFFICIENTLY THAN MEN, STUDY FINDS: New research finds that although women have smaller brains then men women tend to use their brains more efficiently. The research was conducted by University of California neuroscientists who were trying to find why men and women are of equal intelligence despite the fact that men have larger brains. Researchers studied a group of men and a group of women and found that women’s brains requires less energy and fewer brain cells to achieve the same, or better results than men’s. Researchers noted that men were better at spatial reasoning while women were better at inductive reasoning and tracking a changing situation. (Daily Mail)