Testosterone Overload

Whether it's the ultrasound machine or infanticide to blame, the problem is real in Asia -- there are disproportionately more males than females -- opposite of what you would find in the developed nations of the world. What are guys to do who are sexually frustrated? Add that to other problems in the region, such as runaway economic growth, but a large population of poor and you have to start to wonder. With no women to keep them busy, men tend to get themselves into a whole lot of trouble -- such as finding extreme nationalism -- and that would be a problem for all of us.

Read more in Foreign Policy.