Lord Stern delivered the Society's 2007 Annual Public Lecture in Manchester on 29 November and London on 30 November.

Global climate change poses a grave long-term threat to the economies and societies of the world. Early and well-structured action can greatly reduce the risks at reasonable cost. But taking such action is urgent and it has to be global. The lecture describes the key elements of a global deal which embodies efficient and equitable international collaboration and how that deal can be built.

Media Briefing - PDF. Click here to view slides.

The full lecture is available to view here, although it has been broken into 4 parts to increase download speeds. You will need a QuickTime player to view the video files. Click here to download the player. For the optimum viewing experience we recommend that you save the files to your computer by right-clicking and selecting "save target as". Then open them with the player.

• Part 1 - 14 mins 49 sec, 31.9MB
• Part 2 - 13 mins 49 sec, 31.4MB
• Part 3 - 14 mins 48 sec, 33.6MB
• Part 4 - 21 mins 36 sec, 49.8MB