On the University of Bath Thought Train we sit down with an academic from the University to talk about their work and current events.

Naomi Deering is this week's guest and talks to us about how making fake poo can benefit some of the world's poorest people. We also talk about:

- How proper sanitation can benefit society in a multitude of ways

- What you can do to become become a 'toilet twin'

- Who first worked out the recipe for the best fake poo