Sex and War : We need to reduce population size to survive as a species

I was surfing on Wired.com on just discovered a really interesting article about a new book called http://www.sex-and-war.com. If you have a few minutes, have a read at the Wired excerpt. The authors offer a really interesting view on human history, showing that most of wars are related to a team fight for ressources (food, land,...). It may be a bit extreme or provocatice (hence the title of this post) but it is even more worrying to see how surexploited the planet is...

Here is a quote : "Power, patriotism, and curiosity can drive even the most intelligent and informed men—and it is virtually always men—to turn new scientific discoveries into weapons of mass destruction. The witness of history seems to be that the predisposition to fight and to defend ourselves against attack is so powerful that human beings, once they perceive themselves to be in a life or death struggle of any kind, will always justify research and development of new weapons, however horrendous their effects. (...) But there is one action that we must take, individually and as a world, if any of the others are to be successful. It directly contradicts some of our deepest evolutionary programming, but if we are to survive as a species, we must stabilize or even reduce population size"

And you? What do you think?