The most crucial climate talk since Paris 2015 deal begins in Katowice

Talks billed as the most important U.N. conference since the landmark Paris 2015 deal on climate change have begun in the Polish city of Katowice, the capital of the Silesian mining district.
 

Over the next two weeks, the aim is to make an end-of-year deadline for agreeing a rule book on how to enforce global action to limit further warming of the planet.
 

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Below is a flavour of the mood around the event, being held in a sprawl of temporary passageways and meeting rooms next to the