atmospheric science

Webb sees water clouds shift on coldest known brown dwarf

The James Webb Space Telescope has watched the weather change on WISE 0855, the coldest known brown dwarf. Over 11 hours, high water clouds grew thicker and thinner, and gases rose from deep inside the object. A team led by…

MIT study finds ozone loss began in 1957, not 1985

The first signs of human-caused ozone depletion appeared as early as 1957 — roughly 30 years before the Antarctic ozone hole was discovered — and the culprit was not chlorofluorocarbons but an older industrial solvent called carbon tetrachloride, according to…