Scientists have discovered "white smokers" — towering salt "chimneys" spewing clouds of shimmering fluid — on the bottom of ...

that create unusual wind patterns. These can produce a downdraft into the chimney that forces the smoke out indoors. Often a taller chimney can help, but not always. The key fireplace dimensions ...

Chimney fires are more common in the colder months of the year. Some homeowners may not know that their chimneys currently pose fire hazards.