The Earth’s atmosphere is a dynamic blend of uniform gases—primarily N₂ and O₂—and variable constituents including water vapour, CO₂, CH₄ and trace species such as O₃. These components undergo a web ...

Every breath a person takes draws from a gas mixture that has barely shifted in recorded history: roughly 78 percent nitrogen and 21 percent oxygen by volume. NASA and NOAA both publish those rounded ...

Atmospheric chemistry is the study of the components of planetary atmospheres, particularly that of the Earth. It specifically looks at the composition of planetary atmospheres and the reactions and ...

The Earth's atmosphere has strengthened its ability to remove air pollutants, including the potent climate-warming gas methane, according to research published in Nature Communications. Regarded as a ...