The industrial chemical methyl chloroform, for example, is destroyed in the atmosphere primarily by hydroxyl radicals. By comparing levels of methyl chloroform emitted into the atmosphere with ...

But the team’s results aren’t unambiguous, he notes. The krypton and xenon in today’s atmosphere may, for example, be a mix of isotopically light gases delivered by comets and the heavier ...

In the background is the headline of what appears to be a news story about a supposed NASA ... to inject over two tons of ice into our upper atmosphere every single week to geoengineer our ...

The Story of the Earth's Atmosphere. By Douglas Archibald, Fellow and some time Vice-President of the Royal Meteorological Society. Pp. 208. (London: George Newnes, Ltd., 1897.