The chimney smoke from the Sistine Chapel is the most watched signal during conclave, which started on May 7. Only two colors ...

The color of smoke is also a key element to watch during a fire ... White smoke tends to be a sign that a fire is creating ...

For white smoke, a compound of the chemicals potassium chlorate, lactose, and rosin (also known as Greek pitch) is used, ...

During the six-month moratorium, the city will not accept, process or approve any new applications or issue any new permits, ...