Is Merkel's green zeal turning brown?

BERLIN (Reuters) - For all Angela Merkel's headline-grabbing "green revolution", Germany's image as a world leader on environmental policies is in danger of falling under the shadow of the smoke stack and a cloud of exhaust fumes.

Increasing dependence on brown coal has raised doubts about whether Berlin will hit its medium-term CO2 emission goals. And though EU regulations have helped bring down vehicle emissions, critics denounce the political reluctance to confront Germans' passion for big, fast cars.