Just some spontaneous philosophical thoughts on a rainy Sunday evening:
It's not always an engineering problem.
For example: extreme hunger still exists in the world today not because we as a whole are not producing enough food (I have personally seen the wastefulness in food in rich countries) , but that the production and distribution of food is very disparate between the first and third world countries. Factor in war, corruption in government and corporations, and highly inequitable trade agreements between countries, and one will realize we will always have a huge population of the world go hungry no matter how smart we would have become at producing food.
The best answers to our worldly problems can only come from good politics and more favorable trading environments for the less wealthy (I am looking at you middle men of coffee and cacao beans especially! And also, High Frequency Traders -- you are just gaming the system.)
Economists/Businessmen and politicians will be the sole saviors of the world their fellows (or even they themselves) have ruined.
And somehow that pisses me off. I should run for President or something -- but again, this is also not an engineering problem.