Overall, there are slightly more men than women in the world. According to United Nations estimates for 2015, there are 101.8 men for each 100 women, with the number of men rising gradually each year since 1960. But a map by the Pew Research Center with the latest U.N. data clearly shows that men and women are distributed unequally around the globe. In the countries of the former Soviet Union, for example, women outnumber men. Conversely, there are more men…