En los ultimos anos la volatilidad de los mercados agrarios ha aumentado notablemente. En este articulo se analizan las causas de este aumento, abordandose cuestiones como el deficit de liveralizacion existente en el comercio agrario internacional, la especulacion financiera en los mercados de...

Replaced with revised version of paper 07/29/11.

Prepared for the COMESA policy seminar on“Variation in staple food prices: Causes, consequence, and policy options”,Maputo, Mozambique, 25-26 January 2010under the Comesa-MSU-IFPRI African Agricultural Marketing Project (AAMP)

Paper to be presented at the Comesa policy seminar“Food price variability: Causes, consequences, and policy options"on 25-26 January 2010 in Maputo, Mozambiqueunder the Comesa-MSU-IFPRI African Agricultural Markets Project (AAMP)

The economic effects of climate change on agriculture have been widely assessed in the last two decades. Many of these assessments are based on the integration of biophysical and agro-economic models, allowing to understand the physical and socio-economic responses of the agricultural sector to...

The economic effects of climate change on agriculture have been widely assessed in the last two decades. Many of these assessments are based on the integration of biophysical and agro-economic models, allowing to understand the physical and socio-economic responses of the agricultural sector to...

We investigate the impact of increases in wheat flour prices on household food security using unique nationally-representative data collected in Afghanistan from 2007 to 2008. We use a new estimator, the Unconditional Quantile Regression (UQR) estimator, based on influence functions to examine...