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The Food Chain
How safe is the soil in our cities?
The Food Chain
Jun 26, 2024

More of us are living in cities and urban farming is on the rise. Can you be sure the city soil you’re growing in is clean enough?

Industry and traffic can contaminate land, but there are ways to deal with the problem.

Ruth Alexander finds out how to test soil, how to clean it, and which fruit and vegetables are the safest to grow on former industrial and commercial sites.

If you would like to get in touch with the show, please email: [email protected]

(Picture: A garden trowel with some soil on it)

Producer: Hannah Bewley

More Episodes

May 27, 2026
The business of food tours

Food tours are becoming one of the fastest-growing parts of the travel industry, with tourists increasingly choosing to explore cities and cultures through what they eat.

In this episode, Ruth Alexander explores the global rise of guided food experiences and the people building businesses around them.

In Manchester, food tour guide Julia Fairburn takes Ruth through some of the city’s best-known food spots, explaining how successful tours combine local history, storytelling and carefully paced eating experiences designed to leave visitors with lasting memories.

Eric Wolf, founder and executive director of the World Food Travel Association in Valencia, Spain, explains how food tourism has expanded worldwide into a multi-billion-dollar industry, as travellers increasingly seek authentic and immersive culinary experiences.

We also hear from Judith von Prockel, who began creating holidays centred around food experiences more than two decades ago, long before culinary tourism became mainstream. She reflects on how attitudes towards food travel have changed and why people are increasingly planning trips around what they want to eat.

And in Malaysia, Pauline Lee from Simply Enak describes the work involved in creating memorable food tours in a growing and increasingly competitive market, where guides must balance logistics, hospitality and cultural storytelling alongside the food itself.

From hidden local gems to global tourism trends, we explore why food tours have become big business — and what travellers are really looking for when they book them.

If you’d like to get in touch with the programme, please email: [email protected]

Producer: Izzy Greenfield Sound engineer: Andy Mills Picture: Simple Enak


26min 28sec



How safe is the soil in our cities?

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