Nuts to this stuff Tom! You should build coal factories, weapons manufacturing arms factorys, and killer robot factorys.
<sarcasm> dude you're right, killer robots are much more important than starving kids in africa </sarcasm>
This is especially amusing because killer robots ARE on our long term agenda, if you consider a working P-Bot with face recognition/tracking that can aim a gun at a moving target, but that's much more in the distant future.
Ah yes to be humored by Tom himself. Anyway if you really do want to save the world consider this, water the most basic element for life. Get enough of this to everyone, and practicly no more problems, well besides genocide, natural disasters, human greed, and disease this should lightin up the load a bit.