I have never seen a better visualization of the massive discrepancies in income and health. This problem is solvable.
UPDATE: I posted this after seeing it at Pharyngula, and then I went back and read the comments. The data presented came from gapminder.org, which is one fascinating site. I strongly urge you to check it out. A word of warning though, you can easily spend a few hours there.
They have a number of videos, including this one on the effects of democracy on wealth and health. I found the results to be astounding.