Last day my wife brought home some colleagues working in the enviroment deparment of the town hall that wanted to see our composter worms. It was a very nice visit and myabe the first time in the several years we live with those wonderful worms, in which I feel proud of them and not afraid of being discovered.
This story started aroung 7-8 years ago when after reading the web compostadores and some others. I bought there the composter (not difficult for skilful or time owner to build by oneself), I learnt from them some tips, bought the worms and they have become our pet as my son says in school. OK, maybe it is not so pink but I am happy because I do not employ too much time or effort with them, they survive and eat a good part of our domestic litter (the vegeatble part, the biggest one) transforming it into good compost.
I suppose you are asking, very ecological but does it have any relationship with climate change? Maybe it is not the critical factor but other litter treatments generate more GHG as methane or CO2 when they are stored or burned. Whereas composting (worm composting in this case, it could be done without worms but in a different way with more space requirements, and this composter lives at home in a small balcony) just fixes the Carbon in soil fertilizer. Apart from transport related CO2, not needing movement is always a saving in CO2 until we change our tranportation technologies.