That guy has some good points, but he is a doomsday looney. I've read the whole thing, it is interesting, but I have more faith in science and humanity with a mission. I think when the people of earth finally realize that we can't consume just to consume (which we all do, myself DEFINITELY included) and that we will face modern civilization decay, we will find a way.
Hopefully, we will be more proactive than that, though. We have other options, but the people in power would rather be rich and the masses would rather be comfortable.
/////ENEMY () WITHIN\\\\\