PITTSBURGH (KDKA) -- For the third day in a row, the entire state of Pennsylvania is under a code red, meaning the smoke from the Canadian wildfires is causing unhealthy levels of pollution for ...

Black smoke coming out of the Vatican’s chimney during a Papal Conclave means the vote for a new pope failed and no one has been selected for the position. A candidate must receive a two-thirds ...

The smoke acts like a screen. As the white light of the sun enters the atmosphere, the smoke scatters out the blue, green and yellow light. That makes the sun a red-orange.

Gray Smoke – A mix of materials burning, often indicating a transition between fuels. Dark Brown or Black Smoke – Signals heavy fuels (like trees or structures) are burning intensely, meaning ...

Black smoke coming out of the Vatican’s chimney during a Papal Conclave means the vote for a new pope failed and no one has been selected for the position. A candidate must receive a two-thirds ...

Black smoke coming out of the Vatican’s chimney during a Papal Conclave means the vote for a new pope failed and no one has been selected for the position. A candidate must receive a two-thirds ...