The Importance of Good Soil for Food Growing

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Jess Davis is a professor of sustainability and an environmental scientist at Lancaster University. She has become really interested in urban soils and their potential for supporting food growing. As the climate changes, we'll need to work out how future city dwellers are going to be fed. Jessica: If we used all of that space, then we could grow the equivalent of more than four times what we currently grow and import for crops well-seated to Britain.

As the planet warms, and intense heatwaves become the norm, our urban environments need a radical rethink to keep them habitable. So what do we want the cities of the future to look like? In the first of our special series of episodes looking at what a future world could look like, Madeleine Finlay speaks to author and historian Ben Wilson, Prof Jessica Davies and Prof Diane Jones Allen about how to create cities that are fairer, greener and more self-reliant.. Help support our independent journalism at theguardian.com/sciencepod