Richard Bean's new black comedy tackles the divisive issue of climate change, questioning what we think we know and whether the science really is settled. "I'm a scientist. I don't "believe" in anything." The study of climate science is the cool degree at the university where Dr Diane Cassell is a lead academic in Earth Sciences. At odds with the orthodoxy over man-made climate change, she finds herself increasingly vilified and is forced to ask if the issue is political as well as personal. Could the belief in anthropogenic global warming be the most attractive religion of the 21st century?