"UrsuLaB" is a transdisciplinary laboratory project dedicated to biomedia, located on the cultural Factory Antre Peaux in Bourges. It responds to the urgency, in the face of the ecological crisis, to go beyond anthropocentric visions in order to imagine the co-future between human and non-human life forms. Like the arts, the sciences, especially those of the living, can be the source of necessary changes in lifestyles and policies, as already shown by the approaches of "participatory biology", not for profit, independent of academic or industrial laboratories. The ambition of "UrsuLaB" is to be a prospective arts-sciences-fictions-environment space open to the public, whose architecture, functioning, co-participatory mediation and tools will be developed collectively in connection with the territory.