India's state wise $C O_2$ emission between 1980 and 2000 isestimated from their fuel usage patterns. It is found that coal isthe most important source of $C O_2$ in all the states. Therelationship between per capita gross state domestic product and$C O_2$ follows an inverted U-shape. The shape is totally dictatedby the inverted U-shaped relationship between per capita grossstate domestic product and coal consumption.
