My Solution is to stop the factories and mass production so that there is less smoke. One way to stop mass production is to recycle and use used things. If you do this it will stop all the demand of the object and the objects will not be made so often therefore, the companies will stop making them and after that they close down the factories. If this works we will all be saved from the pollution. If you think this would work please vote and put it into action. So get out there and save the world.