China 'environment census' reveals 50% rise in pollution sources

Ministry says country has 9m sources of pollution, with factories breaking emissions rules the big problem

China's environment ministry has said the number of sources of pollution in the country has increased by more than half in less than a decade.

Releasing preliminary results of an ongoing "environmental census", China's ministry of ecology and environment said the number of sources of pollution in the country stands at about 9m, compared to 5.9m in its first census, in 2010.