The Error that is Man

[Rodion Romanovich]

First you have to understand why conflicts arise, recources isn't everything, equal distribution, there is the stag hunt problem and the prisoners dillema, what you want would include a world governement controllign every aspect, not going to happen, and I prefer it like that I think.

No, it wouldn't require a world government. It would require, among other things, that people stop trying to establish world governments and empires. And that people would actually use some of the knowledge mankind has discovered (including the stuff you mentioned in your post)... A simple ethics system, developed with among other things the following requirements:
1. unlike most religious ethics, shouldn't rely on, as a basic assumption, that every single human being will follow it
2. that it is sufficient that a certain percentage follows it. This percentage has to be as low as possible so that it's realistic to assume that a large enough percentage follows it
3. that going from not following it to following it will bring an advantage in most cases, assuming the previous condition holds.
If we stop making religious ethics sytems based on the inverse of no. 1, we'll have good chance of succeeding.