Air freight is the volume of freight, express, and diplomatic bags carried on each flight stage (operation of an aircraft from takeoff to its next landing), measured in metric tons times kilometers traveled.
despite continuing border committee talks, significant differences remain with Thailand over boundary alignment and the handling of ethnic rebels, refugees, and illegal cross-border activities; groups in Burma and Thailand express concern over China's construction of 13 hydroelectric dams on the Salween River in Yunnan Province; India seeks cooperation from Burma to keep out Indian Nagaland insurgents
bulk 3, cargo 371, chemical tanker 51, container 70, liquefied gas 13, livestock carrier 1, multi-functional large-load carrier 15, passenger 10, petroleum tanker 24, refrigerated cargo 34, roll on/roll off 16, short-sea passenger 2, specialized tanker 6
Merchant marine may be defined as all ships engaged in the carriage of goods; or all commercial vessels (as opposed to all non-military ships), which excludes tugs, fishing vessels, offshore oil rigs, etc.; or a grouping of merchant ships by nationality o
The major ports and harbors selected on the basis of overall importance to each country. This is determined by evaluating a number of factors (e.g., dollar value of goods handled, gross tonnage, facilities, and military significance).
Travel services (% of commercial service exports) covers goods and services acquired from an economy by travelers in that economy for their own use during visits of less than one year for business or personal purposes. Travel services include the goods and services consumed by travelers, such as lodging and meals and transport (within the economy visited).
Vehicles per populated land area Units: Vehicles/Populated LandArea (in km2) Units: Air pollution is generally greatest in densely populated areas. To take this into account, we used the Gridded Population of the World dataset available from CIESIN and calculated the total land area in each country inhabited with a population density of greater than 5 persons per sq. km. We then utilized this land area as the denominator for the vehicles data.
World Bank, World Development Indicators 2001, Washington, DC: World Bank, 2001