I do believe that climate change is one of the biggest global issues, and also one that is not being taken seriously enough. So pushing for eco-friendly sources of energy, motivating people to use public transportation instead of buying cars, and not buy huge houses for a couple of people, as well as motivating them to eat more plant-based food even if they're meat eaters are all relevant things. But it's all not that simple, when it comes to practice. For example, in my country there's a very nice law for green energy that obliges the country to ensure that all of it is bought, even though the price is much higher than for not so green energy. But the biggest provider of the green energy is also the biggest owner of the most polluting plants in my country. I'm sure there are other weird things like that in other countries as well, that show the complexities of tackling the climate change. As for Bitcoin, I think it miners should not be blamed more than any other high consumers of energy, and the legislation should treat them equally, pushing for green energy instead of banning activities that require big amounts of energy.