Green Left: Almost universally, governments are refusing to recognise the scope and urgency of the changes demanded by global warming. The menace, however, is real, and the time available for concerted action to combat it is frighteningly brief. There is something counter-intuitive here, when most of us are still experiencing climate change only as near-imperceptible shifts in average temperatures. But nature is gradualist only up to a point. The smooth curves that describe “linear” processes can …