Just to emphasise the point that much of the world is undernourished, I ran
across this article.

http://www.inteldaily.com/?c=172&a=5326

There are lots of factors, but capitalism, unsustainable agriculture, droughts,
energy shortages and ethanol production are all contributors. Global warming
is probably not an important factor so far.

This is one of the reasons I worry less about climate change in 50 years, when
half the world could be starving in less than 20.