The correct term is geoengineering. That is what interested people should research.
Edit: or Climate Engineering.
That's quite misleading as Climate Engineering and geoengineering are real terms in their own right. By calling chemtrails geoengineering you're sneaking in the premise that geoengineering and/or climate engineering involve the use of these so called chemtrails. However the whole argument here is whether chemtrails are actually being used for the purpose of modifying the climate etc. You don't get to just do an end run and refer to chemtrails as geoengineering. Which by the way in the normal use of the word has little to to with climate and more to do with geology, mining, groundwater and underground structures.
What? Who says that is what geoengineering is?
Well recently it's become synonymous with Climate Engineering, but Geoengineering can also refer to Geological Engineering, which has to do with the mining etc.
Anyway, it's still up for debate whether chemtrails are a real thing that has to do with Climate Engineering or Geoengineering. Of course chemtrail people want it in that category because it gets more respect that way. Kind of like how creationists will call themselves "Creation Scientists" and (lol) "Intelligent Design Theorists".
My point is, you don't just get to associate your thing with an actual real thing without providing any reason for it to belong in that category.