That all depends. There's nothing wrong with reducing pollution, but when that is coupled with unreasonable taxation and wholesale destruction of the countryside and coastline*, then I think we are simply swapping one kind of pollution for another.
*The British government, under pressure from 'greens' is planning a mass expansion of windfarms. On land this means thousands of miles of previously unspoiled countryside will be concreted over with turbine sites and the access roads necessary for service crews. They are also expanding those out at sea, so there will not be anywhere on our coast that is free of these useless monstrosities. It makes more sense just to build new nuclear power plants on existing sites.
Other proposals include the promotion of biofuels, again under pressure from 'greens', even though the demand for biofuels is now driving the destruction of virgin forest in favour of biofuel crops.