`  ==Your recent edit== Hi, I noticed that your recent reversion to Chemtrails conspiracy theory removed properly sourced material and re-introduced material unsupported by source.  This was probably done in error without checking the source.   you edit purpose was described as ``But, there is no 'covert release' this version`` while properly indicated source of the statement, The Oxford English dictionary states: In the context of various conspiracy theories: an aircraft's visible condensation trail, believed to contain chemical or biological agents released for sinister or covert purposes. Cf.contrail n. diff Please revert your change. Thank you.  `