If the smoke is white, it means a new pope has been selected by a two-thirds majority. One hundred thirty-five cardinals are eligible to vote, according to the Vatican.

Everything we know about the first day of the papal conclave 04:53. Black smoke rising from the Sistine Chapel chimney on Wednesday and again Thursday morning indicated that a new pope had not yet ...

Meanwhile, white smoke is produced using a much cleaner fuel mix and a more powerful oxidiser. Potassium chlorate (KClO₃) – even more reactive than perchlorate – ensures a hot, vigorous burn.

In June 2023, a surreal glowing orange haze descended on New York City and across other East Coast locations as winds concentrated and redirected smoke from Canada wildfires.The smoke eventually ...

More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts says climate change means U.S. residents better get used to it.

Smoke from wildfires in Canada has begun drifting across the border into the United States, raising concerns on Friday about possible health hazards in the Upper Midwest, the authorities said.

Prolonged exposure to wildfire smoke can have short- and long-term impacts on one's health, especially for those with chronic conditions, seniors, young children and pregnant women.