At Glasgow, Can the World Move from Aspiration to Action?

Glasgow, once the second city of the British Empire and the biggest shipbuilder on the planet, next month hosts the 26th conference of nations aiming to halt dangerous climate change. The negotiators face the challenge of turning the aspiration of the 2015 Paris Agreement to achieve "net zero" emissions by mid-century into the detailed near-term action plans necessary to turn those hopes into reality in time to halt warming at or near 1.5 degrees Celsius (2.7 degrees Fahrenheit). Sadly, while aspiration is going well, progress on action is slow, say scientists. Most big emitters have in recent months promised to…