On Start the Week Anne McElvoy talks to the environmental campaigner Tony Juniper about putting a price on nature, and reframing the importance of the natural world in terms of finance. But the writer William Fiennes believes it's the imagination and not discussion of dividends and capital that will inspire the next generation, and Ngaire Woods argues that governments and business should be run by goals and values, and not the balance sheet. The Tory MP, John Penrose, looks at whether we should be doing more to protect city skylines and townscapes. Producer: Katy Hickman.