Mood of 'realism' about future deal at climate talks

Negotiators from around 190 countries are meeting in Warsaw to try to advance steps towards a global climate agreement. Participants say there is a growing sense of realism about the scale of what can be achieved in any new deal. via Pocket http://www.bbc.co.uk/news/science-environment-24857163#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa