Climate Change: should science guide politics – or politics guide science?

Anthropogenic climate change has been described as one of the most serious problems facing the 21st century, yet public debate of the issue is plagued by uncertainty. What are the likely consequences and what costs would be involved in attempting to mitigate them? Science and mathematics are needed to test the empirical claims and to consider the questions they raise about risk assessment and probability. But, alongside the natural sciences, ethics, philosophy and the social sciences also have a crucial role to play.