Ugh. Got an idiot posting about “chemtrails” on my rainbow cloud photo. The only chemical needed is H2O. *plonk* Ugh. Got an idiot posting about “chemtrails” on my rainbow cloud photo. The only chemical needed is H2O. *plonk* Related Posts:Fleeting Rays of SunlightNot a RainbowFragments of a circumhorizon arcMost of us have seen a single #rainbow. Many of us have seen a…