Three of the UK's four agri-tech centres which support farm technology and innovation are merging. They are CIEL - the Centre for Innovation Excellence in Livestock; CHAP - Crop Health and Protection; and Agri-Epi, the Agricultural Engineering Precision Innovation Centre. The fourth, Agrimetrics, which covers data will go its own way as an independent company. We speak to the science minister at the World Agri-Tech Innovation summit in London about why the government's changing them. All week we're looking at nature writing. The Wainwright prize is awarded annually to the books which most successfully inspire readers to explore the outdoors and nurture respect for the natural world. This year's prize for conservation writing went to Guy Shrubsole for his book, The Lost Rainforests of Britain. Presenter - Charlotte Smith Producer - Rebecca Rooney