The last five years have seen a surge in demand for natural history programmes. But as budgets get tighter and commissioners become more discerning how can those working in this genre continue to offer new stories about the natural world?Guests: Vanessa Berlowitz, Co-Founder, Wildstar Films. Alastair Fothergill, Co-Founder, Silverback Films, and Rowan Crawford, Series Producer, Natural History Unit at BBC StudiosPresenter: Katie RazzallProducer: Helen Fitzhenry