evidence: Chemtrails Debunked by Atmospheric Scientists [...] RELATED: Viral Video Claims to Prove Chemtrails Conspiracy Theory Beyond that, when showed the evidence presented by chemtrails proponents — such as strontium, barium and aluminum found in water, soil and snow samples — the researchers concluded that those things could be explained through other factors, "including well-understood physics and chemistry associated with aircraft contrails and atmospheric aerosols."