Wildfire smoke is no longer just a short‑lived air quality problem drifting over cities for a few hazy days. New research shows that when these plumes rise high into the atmosphere, they can spawn ...

ROME, Italy — When a new pope is needed, the College of Cardinals gather at the Vatican to vote and colored smoke flows out of the Sistine Chapel’s chimney depending on the result — but what does it ...

The Vatican’s cardinals gather in conclave today to begin electing the successor to the late Pope Francis—which means the world’s attention is on a chimney attached to the Sistine Chapel. Here puffs ...