A detection of phosphine in the atmosphere of a brown dwarf 54 light-years from Earth deepens the mystery of phosphorus chemistry throughout the Milky Way. An ancient object more than 10 billion years ...

New high-altitude measurements have revealed a hidden population of extremely small, organic-rich aerosol particles in the lower stratosphere. The findings suggest that these ultrafine aerosols, ...

A new study shows that a specific type of silicone, the so-called methylsiloxanes, is widely present in the atmosphere across ...

Methane levels in Earth’s atmosphere surged faster than ever in the early 2020s, and scientists say the reason was a surprising mix of chemistry and climate. A temporary slowdown in the atmosphere’s ...

Artificial intelligence (AI) is transforming how atmospheric composition and chemical processes are observed, interpreted, and modeled. The complexity of atmospheric chemistry—shaped by nonlinear ...

The atmospheric chemistry of hydroxyl radicals and gas‐phase reactions is central to our understanding of air quality and climate dynamics. Hydroxyl radicals (•OH), often described as the “atmospheric ...

Nitrates in the atmosphere reduce air quality and play an important role in climate change. An international team led by Hokkaido University researchers has revealed how chemical processes in the ...

This report summarizes the rationale and need for supporting a comprehensive U.S. research program in atmospheric chemistry; comments on the broad trends in laboratory, field, satellite, and modeling ...