I think it's pollution and wasting. There is too much CO² in the atmosphere. And the very populated country as China, USA or Brazil use too much "not-renewable" resources as petrol, gas, coal...
How do the world survive without it? We will be forced to find new resources or the Earth will become intolerable.
i would say... poverty... but keep in mind though that if every one in the world had the same quality of life that the average american did we'd be screwed; in fact sooooo much we would need annother earth just to put the trash on...
Specifically, if this world could be changed in any one way, I think all our problems could be depleted if we were united as a whole. But with all of us at contest against either other we create more fires than we can put out.
Some people have lived in poverty and can therefor deal with it. It's the treatment these people get - treatment every person gets in our ignorant world.
I'd say Tolerance, people these days can't tolerate others being stronger, wealthier, or way of living life, and that, causes jealousy, and jealousy causes anger, and so on so forth. Whether the will power of staying tolerant stands or falls, Hate breeds more hate, and in the world we live in, different living styles of all that inhabit the earth will, in my opinion, never change.
World Peace should be the most important thing to do from my standpoint.
