Ahead of Zero Waste Week next week, the fourth episode of Series 01 is a conversation between Katie Treggiden and ‘Zero Waste Warrior’ Ander Zabala (@goxuboys on Instagram), who can fit his weekly household waste into a single jam jar. They talk about how Ander found his calling while still at school, the importance of making waste visible, and how starting small can produce big results. As recommended by Metro, The Week, Wallpaper and FastCompany.