Extract the answer to the question from the following context. Question: What can make a dwelling more comfortable? Context: Wood has a long history of being used as fuel, which continues to this day, mostly in rural areas of the world. Hardwood is preferred over softwood because it creates less smoke and burns longer. Adding a woodstove or fireplace to a home is often felt to add ambiance and warmth.
The answer to this question is:
a woodstove or fireplace