climate change ‘Climate Change: The Facts’ bend over backwards to provide solid facts. A strong team of scientists gave testimonies to back up Attenborough’s narrative. It is certainly better to be guided by evidence than by wild guesses. The fact remains, however, that if we wait until all the facts are ‘in’, it will probably be too late. As the programme itself made clear, there simply too many unknowns and perhaps never to be knowns. In any case, isolated facts seldom ‘speak’ for themselves. Their value depends not only the quality of the original research. There is also the problem of robust interpretation. Many critical variables such as ‘ecosystem functions’, ‘food security’ and ‘safety’ are hard to quantify and not amenable to expression in prices. Furthermore, factually we humans might survive the losses of some other species but that does not give us the ‘right’ to wipe them out. We can state certain facts about, say, wind turbines (they filled th...