Yak dung is exacerbating climate change. Really?
Grass and other plants grow, utilizing carbon dioxide and releasing O2 as a by-product, which I greatly appreciate.
Yaks eat the grass, inhaling the O2 and combining it with some of the carbon compounds from the grass to provide the animals with energy. The yaks then exhale CO2. Some of the carbon compounds pass all the way through the yak's system and get pushed out the other end.
A cold Tibetan lights some dried dung -- i.e., combines it with O2 very rapidly, releasing heat, a little more CO2, and some particulate soot that likely winds up on the walls and roof of his hut.
Grass and other plants grow ...
Second verse, same as the first.