«Ecological treaties should seek to curb emissions of sulpher dioxide, nitrogen oxides, heavy metals and other highly - toxic pollutants instead of targeting carbon dioxide, which is a non-toxic gas whose impact on global warming has not been proved,» says Dr. Golubchikov. (thehindu.com)
The drops contained large amounts of dissolved sulphate and acidic sulpher complex HSO4 -. (sciencemag.org)
The lime / sulpher dip is unpleasant, but VERY helpful. (canineexpress.org)