The price of tortillas in Mexico has tripled in recent months and Ruth Gidley in a piece entitled ‘As biofuels boom, will more go hungry’ is blaming ethanol.
With US government greenhouse policy and the price of oil favoring a shift to ethanol, the price of corn is climbing. The US produced 24percent more ethanol in 2006 than in 2005.
Corn is a main ingredient of tortillas as well as ethanol.
The Mexican government responded to rioting in January by capping the price of corn.
Is concern over global warming or the price of oil, or both, driving the demand for ethanol which is making food more expensive in places like Mexico?

Jennifer Marohasy BSc PhD has worked in industry and government. She is currently researching a novel technique for long-range weather forecasting funded by the B. Macfie Family Foundation.