things like this rub me the wrong way. you cannot compare income levels between countries with vastly different costs of living. sure, first world countries will have a higher standard of living overall, but putting $25/hr in US up against $0.08/hr in Ghana is a misleading comparison of purchasing power. case in point: in Ghana you can probably buy a castle full of servants on 80 acres for $25/hr.
"For currency conversion we use Purchasing Power Parity Dollars (PPP$) in order to take into account the difference in cost of living between countries; PPP$ are also less susceptible to short term fluctuations."
if someone made $0.08/hr in the US, they would starve. homeless people make a lot more than this in the states. but somehow, people manage to raise whole families on those wages in third world countries. what am i missing?