This brochure provides the key figures for the third inventory, which was carried out in 2010 thanks to the cooperation of the designated operators of 133 Union member countries. The UPU International Bureau performed the inventory calculations using a specific tool created by the organization, based on a methodology recognized internationally by the Greenhouse Gas Protocol and the Global Reporting Initiative and used by the United Nations Programme for the Environment (UNEP), among others. This new inventory takes account of emissions from vehicle fleets, postal buildings (electricity, fuel, refrigerant gases), air, sea and rail cargo, business travel and subcontractors' activities (transport and buildings). Each designated operator has received the results concerning its individual 2010 emissions and may request a detailed report on those emissions from the International Bureau. In order to ensure continuous improvement, designated operators may use this data to set emissions reduction targets, communicate with their stakeholders and even inform customers of their efforts to reduce the carbon footprint of each item they send.