Climate Change Negotiators Gather in Poland

Climate change negotiators are gathering in Poland on how to fully implement a three-year old agreement to limit global temperature increases.

Also on the programme: Why some of India's younger people are going off gold.

Julian Worricker discusses these and other issues with Richard McGregor, journalist and author; and Alex Von Tunzelmann, historian and screen writer.

(Image: Smoke rising in Nizhny Tagil, Russia, where benzopyrene in the air exceeded the permissible level by 13 times. Credit: EPA)