The Comprehensive Nuclear Test Ban Treaty Organisation, which watches out for nuclear
weapons tests worldwide, looked at its data for the last few days to see if its infrasound — below the range of human hearing — recordings, normally used to seek out the muffled crump of underground tests, contained any signature of an aircraft explosion.
Fossil fuel combustion has dispersed fly ash particles
worldwide, pretty well coincident with the peak distribution of the «bomb spike» of radionuclides generated by atmospheric
testing of nuclear
weapons, Dr Waters says.