The Italian chemtrailist Tankerenemy is recently (mis)using a scientific paper by and an interview to well known and respected scientist Ulrike Lohmann (ETH Zurich). Besides other things, she is seriously involved in efforts to assess and potentially reduce the atmospheric pollution induced by aviation, particularly in terms of nanoparticulate combustion exhausts. Here is the abstract of the paper published by Atmospheric Environment which she coauthored (http://dx.doi.org/10.1016/j.atmosenv.2016.03.051): Unfortunately the paper is behind a paywall, however Tankerenemy gives a link to the slides of a recent presentation at 20th ETH Conference on Combustion Generated Nanoparticles based on the paper. The experimental results show metal residues "internally mixed" with elemental carbon (EC) nanoparticles (soot), including Aluminum and Barium. Guess what, this fact is quoted as a blatant confirmation of chemtrailists' stories without mentioning the quantities involved (typically, parts per million mass - ppmm), see slide 12. I have not seen yet the recent doc Overcast (http://overcast-the-movie.com) which includes the interview to Professor Lohmann, I guess it misuses facts according to the chemtrailist bandwagon as Tankerenemy is provably doing in this case (his post in Italian).