Stop, check, go!
Diesel vehicles will be checked for pollution in Mumbai
Down with diesel
Replace old diesel vehicles, proposes a Japanese study
CHINA
Tougher truck rules
Carry on polluting
Environment ministry's message to genset diesel engine-makers
Euro V norms
EC announce draft proposal
Tokyo fudge
Diesel filter scandal serves up regulatory warning
Ban sought on diesel
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SOUTH AFRICA
HONG KONG
Hollywood, the second largest polluter in Los Angeles
Making power needs more energy than it yields
Polluted city
Diesel vehicles are at the core of Hong Kong's air pollution problems
VIETNAM