Wheat is one of the most important grains worldwide: you’ll find it in bread, biscuits, pasta, sauces, sweets and more besides. Indeed, take wheat products off supermarket shelves and they would look rather bare. But recent global events – not least the war in Ukraine - have caused crop prices to soar.

Ruth Alexander charts how a humble grass grown in the Fertile Crescent became a commodity traded worldwide, and she explores whether we’ve become too reliant on this “mega crop” for our food supplies – and what alternatives there might be.

If you would like to get in touch with the show, please email: thefoodchain@bbc.co.uk

(Picture: An ear of wheat blowing in the wind. Credit: Getty/BBC)

Contributors:

Cathy Zabinski, professor of plant and soil ecology at Montana State University, US

Frank Uekotter, professor of environmental humanities at the University of Birmingham, UK

Augustine Sensie Bangura, CEO of Sierra Agri Foods, Sierra Leone