http://www.guardian.co.uk/environment/2008/jul/03/biofuels.renewableenergy
"Biofuels have forced global food prices up by 75% - far more than previously estimated - according to a confidential World Bank report obtained by the Guardian.
The damning unpublished assessment is based on the most detailed analysis of the crisis so far, carried out by an internationally-respected economist at global financial body."
"...The report points out biofuels derived from sugarcane, which Brazil specializes in, have not had such a dramatic impact."
So what is the problem with trade with Brazil again? ohhhh....they don't vote in the Iowa caucus!