Wildfire smoke lofted miles high could have an unexpected effect on Earth’s climate New measurements demonstrate that smoke particles in the upper atmosphere are twice the size of lower-altitude ones. Astrobitica December 16, 2025 (Last updated: December 16, 2025) 1 minute read New measurements demonstrate that smoke particles in the upper atmosphere are twice the size of lower-altitude ones. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: The $4.3 billion space telescope Trump tried to cancel is now completeNext: Exploring the origins of the universe: 145 low-noise amplifiers complete ALMA telescopes