©Chris Stowers/Panos Pictures..PHILIPPINES Laguna, Luzon 2003..Labourers winnowing rice after a day of harvesting in the lowland rice paddies on the edge of Laguna de Bay. Farmers find they can double and sometimes triple-crop in a year using IRRI (International Rice Research Centre) developed hybrid rices such as these, whereas in the higher altitude regions only a single crop can be produced each year from traditional varieties. ..