Scientists tracked dark brown carbon across five continents and found it absorbs heat nearly as strongly as soot, upending ...

Thick haze blanketed the Front Range on Friday, blocking the sun and views of the mountains for most of Colorado's population. The haze is smoke that has traveled from dozens of wildfires currently ...

Air pollution is a major cause of death around the world, and its intricate chemistry is still a puzzle. Exposure to the fine particles in haze killed an estimated 3 to 4.3 million people in 2015 ...

IMAGE: A new study by CU-Boulder researchers indicates a thick organic haze shrouding Earth several billion years ago was similar to the one now hovering over Saturn’s largest moon, Titan. University ...

Astronomers have used the James Webb Space Telescope to capture the most detailed look yet at the atmosphere of Kepler-51d, a planet so lightweight it has been compared to cotton candy. The new data ...