In communities living next to factory farms, residents have long voiced their concerns about environmental pollution. Now, research shows that not only can we see the air pollution generated by ...

Instead of being formed of ammonia ice—the conventional view—it now appears they are likely to be composed of ammonium hydrosulfide mixed with smog. The findings have been published in the ...

Ammonia, NH 3, is an alkaline gas and so turns damp red litmus paper blue. Ammonium ions (NH 4 +) – found in ammonium compounds such as ammonium chloride, ammonium nitrate and ammonium sulfate ...