Sand, salt, iron, copper, oil and lithium - six materials we couldn't do without. But is it possible to fulfil our sustainability goals in building renewables and batteries without their exploitation? Our economics and data editor Ed Conway sits down with Daily podcast host Niall Paterson to talk about his latest book, Material World: A Substantial Story of Our Past and Future, and discuss the reality of the move to net zero on our resources, the impact of geopolitical tensions in China, and where the UK stands as a post-industrial economy. Producer: Soila Apparicio Digital Producer: Emma Rae Woodhouse Editor: Paul Stanworth