> Consuming the biosphere is not gas release. It is a moral choice that individuals, communities and nations can change daily. They can, but they don't. I don

> Consuming the biosphere is not gas release. It is a moral choice that individuals, communities and nations can change daily. They can, but they don't. I don't understand your point. The choice you're talking about is being made. It's not because you don't like it that it doesn't exist. In any case what matters is what is actually done, not what could be done in an ideal world. So to me the impact of methanosarcina on the environment is indeed comparable to the impact of Homo sapiens, in the sense that both are extinctions induced by biotic agents.