How and why do certain groups in the USA, mainly politically conservative or right-wing apocalyptic evangelicals, generate and distribute truth-claims that hold that climate change science and Covid-19 are fabrications governed by manifest evil? Using a sociological methodology informed by Bourdieu and Foucault, this book offers tools for scholars and students to better understand the logic of climate denial within the context of American conservative evangelicalism and apocalypticism. Tristan Sturm and Tom Albrecht coin and employ the term apocalyptic conspiracism to analyse the increasingly powerful confluence of apocalyptic and conspiracist discourses that creates a holistic belief system which claims that the world will profoundly change for the worse as a result of a global network of interconnected conspiracies. This book focuses on and expands the literature on the discursive practices of anthropogenic climate change and Covid-19 scepticism and denialism and further improves the understanding of religious, apocalyptic, and conspiracist belief systems which affect geopolitical imaginations, the perception of global crises, as well as the environmentally relevant behaviour of American evangelical Christians.