Originally Posted by Firestorm 
I think you are overstating it, the only thing on your list that could be a real consorens in my opinion is nuclear war, but people have been fearing that for decades and all that fear have done is dissuaded countries from going to war.
I think you're being a bit naive. If the human race doesn't drastically reduce its present rate of growth, we're in for some *major* problems on a global scale within just a few generations.