Shastra Deo, a nuclear semiotics expert from the University of Queensland, joins UK journalist Mark Piesing to explore the complexities of nuclear waste. They discuss the monumental task of constructing underground facilities to secure toxic materials for millennia, emphasizing the need for effective long-term communication of dangers. Innovative concepts like 'Raycats' are introduced as a way to warn future generations. The conversation also touches on climate change’s impact on migration and the emotional toll of environmental uncertainties.