MELBOURNE – Humanity has just about run out of time to address climate change. Scientists have pointed out that a rise in temperature of 2º Celsius above pre-industrial levels will put the Earth in dangerous, uncharted territory. Yet we currently are on a path toward an increase of 4º or more this century. The last chance for action has arrived.
That chance lies in Paris in December 2015, when the world’s governments meet for the 21st annual United Nations climate-change meeting. But this time will be different. Either governments will agree to decisive action, as they have promised, or we will look back at 2015 as the year when climate sanity slipped through our fingers.