This week’s programme is all about being kinder to the earth and the creatures we share it with. Guy Barter meets the founder of Riverford Organic Farmers, Guy Singh-Watson, to discover how he turned a family dairy farm into a byword for sustainable food. Dave Goulson, author of Silent Earth – Averting the Insect Apocalypse shares his thoughts on how gardeners can be more active in the fight to save our bees, butterflies and all manner of threatened insects. Plus RHS Gardening Advisor Nikki Barker offers advice to gardeners who grow on sandy soil.