Hi !
It's definitely a big deal concerned with Bitcoins and the environment perse. One have to understand the fact that, bitcoins is notorious for using high amount of electricity concerned with mining and there are very few miners who are using renewable sources of energy as well, which does mean that the green energy alternative for mining is very slow as well.
One have to understand that these things are extremely personal therefore one have to take their own steps to make sure they are helping the environment while keeping the community intact.
The government's ideas about bitcoins concern with the pollution is banning it directly but I do not think how this can be any more reasonable than switching to better sources, by implementing finer laws to make sure that it can be *improved*. But we will still wait for many years to come for such an opportunity but till then if you are a miner, you know what to do.