Modern chimneys can indeed help you in fighting global warming because in this case you have least chances of emitting poisonous elements into the atmosphere thereby augmenting the process of environmental warming and pollutant accumulation. When you are using a modern chimney to heat your house you are allowing something to burn to generate heat throughout the house and letting the detrimental elements like soot and smoke move out by means of a chimney or piping mechanism. Moreover, this form of heating is immensely cheaper and it is comparatively versatile than other heating systems.
Modern chimneys reduce carbon foot printing and can be easily controlled when compared with the other mechanisms. A modern chimney is something on which you can rely upon and it saves you the risk of excessive electric consumption. However, you just have to keep in mind that you need to clean your chimney regularly or else it can get contaminated with the emission of carbon monoxide. Consult a professional and he will help you out in this regard.