The real solution to "ending world hunger": Lower the birth rates in 3rd world countries tremendously.
Those people replicate at an astounishing speed while really not producing anything, thus, their replication rate is way beyond a rate that would enable them to actually feed themselves properly. They are already dirt poor, and if each woman has a gazillion kids, feeding them all is kinda hard when the resources to aquire that food just ain't there.
Actually, a lot of problems in this world would be solved if the birth rates among the groups of the highest replication rates were brought to about 2.
So instead of looking at how "responsible" we all have to be regarding these countries, it = better to adress the real problems, which = lower the birth rates A LOT (easier said than done) and removing the corrupt assholes in these countries (which basically means most of the gouvermental people).
Fuck, it seems like the sources of problems in poor countries is found in the very fabric of their societies, and thinking it is rich countries responsibility to keep them afloat = bullshit. The only ones that can help them (like the countries in africa) = themselves. Of course, that is one hell of a job, but its still not other peoples responsibility.