ffinlo Costain meets David R Montgomery, the author of Dirt: The Erosion of Civilisations.

In a warm conversation, they discuss worms, the plough, soil bank accounts, regenerative farming, human nutrition and much more. ffinlo also finds out why human health improved in the UK during the Second World War.

Montgomery is also co-author (with Anne Biklé) of What Your Food Ate and The Hidden Half of Nature. His new book, ReGen: A New Future for Farming, Food and Health, is out later in 2026.