Posted 27 October 2011
"We can only attempt to identify the causes of climate change through science and these causes need to be clearly established after full debates, validated comprehensively, before expensive remedies are imposed on industries and communities. I first became interested in the question in the 1990s when studying the anti-human claims of the 'deep greens'. Mine is not an appeal to the authority of any religious truth in the face of contrary scientific evidence. Neither is it even remotely tinged by a postmodernist hostility to rationality. My appeal is to reason and evidence, and in my view the evidence is insufficient to achieve practical certainty on many of these scientific issues." Australian Cardinal George Pell, in an address to the Global Warming Policy Foundation, UK.
Edited extracts of the Cardinal's address here