impact of biofuel policy on commodity price variability is poorly understood. A good understanding of biofuel policy's impact … on price variability is important for mitigating food insecurity and assisting policy formation. We examine how U ….S. ethanol policies such as the Renewable Fuel Standard (RFS) mandates and the blend wall affect the price variability of corn …

the world. We also find that the Iranian economy adjusts quite quickly to the shocks in foreign output and oil exports … relations ; Iranian economy ; oil price and foreign output shocks ; and error correcting relations …