When we choose what we eat it can have a huge impact on our environmental footprint.

Author Sarah Briddle has written one of the books of the year, Food and Climate Change Without the Hot Air: Change Your Diet: The Easiest way to Help Save the Planet, and within it she measures the choices we take and what they mean for the world around us.

Well worth investigating more of Sarah's work via - www.sarahbridle.net/index.html

Keep in touch with Peter on Twitter - @peterfrankopan

Produced, edited and mixed by @producerneil