Gvien that the evidence that the planet is warming and that the primary cause involves human activities, a view that is supported by the vast majority of people who are expert in this issue, why do we hear so much denial of reality.
Nobel Prize winner Sir Paul Nurse, who is also President of the Royal Society, investigates this issue in the horizon documentary below.
This is a fairly gentle response which comes to the conclusion that scientists have to be more active in explaining and defending their work from those who would attack it. This is fair enough, though I wonder if Nurse would be so calm and measured if the likes of Singer and Delingpole came after his work in the dishonest and deceitful way that they attack the climate scientists. My suspicion is that he would take the sort of strong defense shown by Ben Santer in this post.