The first definition of ‘biomaterial’ dates back to 1990. Over the last thirty years, research in this field has come on in leaps and bounds, be it by shedding light on existing possibilities - such as the various uses of hemp - or taking the first steps into new worlds to be explored, as in the case of fungi. Fungi? Of course! We could soon be using them to produce textiles, building materials and sensors for heat, light and chemicals. But that’s not all: a European project is aiming to use fungi to create nanoparticles for buildings which “continuously grow, regenerate and die”.