Within the nuclear environmental humanities, it falls especially to the disciplines of Archaeology and Heritage Studies to develop approaches and perspectives about remembering and planning extending across long periods of time. Archaeology and Heritage Studies are versed in paying attention to both the tangible and the intangible realms and to varying perceptions and indeed, complex interrelations between past, present, and future. Archaeology, in particular, commonly adopts long-term perspectives in research. Archaeologists working in the heritage sector commonly manage tangible and intangible human legacies, the cultural heritage, with present and future needs in mind. In this chapter we offer two arguments to the emerging field of nuclear environmental humanities: firstly, an archaeological understanding of time in the context of historical consciousness, and indeed, as we will argue, future consciousness, and how it can inspire critical thinking about the nuclear domain across disciplines; secondly, the notion of nuclear waste as cultural heritage, in particular, offers critical insights that have the potential to challenge not only current thinking in the nuclear waste sector, but also current thinking in the humanities themselves.