We speak to Tessa Clarke, Co-Founder and CEO of OLIO, about the often under-appreciated threat of food waste to our planetary wellbeing and survival. 

When we think of climate culprits, deforestation and fossil fuels come quickly to mind. But food waste is one of the biggest problems facing the planet.

For this episode, Jo Mary Watson spoke to Tessa Clarke, co-founder of OLIO – the number one free sharing app, whose 5 million users have so far shared over 34 million portions of food, and saved over 5 billion litres of water.

This podcast is part of '400 Parts Per Million', an ecological arts project by Theatre in the Rough, supported by Arts Council England and the PH Holt Foundation.

Find out more at http://400.earth