> Has anything actually gone past the point of no return? We won't know when we pass points of no return until well after we're past them (and even then, livin

> Has anything actually gone past the point of no return? We won't know when we pass points of no return until well after we're past them (and even then, living in denial may be an understandable option). To know if the brakes will work, you have to actually step on the brake first. But we have lost a lot of biodiversity as a result of global warming, yes. Things like palsa bogs which won't come back for a long time even if climate returns to preindustrial tomorrow.