Materials engineer Zoe Laughlin explores an item so ubiquitous, most people don't give it a moment's thought: the toothbrush. With 200 million thrown away each year in the UK, she's on a mission to find a more sustainable solution.

Zoe explores an item that is extraordinarily intimate and transports us to other worlds: headphones. With 12 pairs sold globally every second, Zoe is on a mission to build her own unique pair. In search of inspiration, she heads to Hull University to discover an exciting new substance that can turn any surface into a speaker.