This chapter, “Ninety Seconds to Midnight,” uses the enduring symbol of the Doomsday Clock to illustrate humanity’s proximity to catastrophe. Initially set during the nuclear era, the clock now stands at 90s to midnight, reflecting compounded existential threats from nuclear risks, climate change, and geopolitical conflicts such as the war in Ukraine. The chapter recounts historical efforts by some of the Manhattan Project scientists—who founded the Bulletin of the Atomic Scientists—to warn the public about the destructive potential of nuclear weapons, contrasting early Cold War desolation with today’s multifaceted crises. It explains why nuclear war has become less feared due to desensitization, shifting global priorities, and perceived deterrence, while also addressing the escalating displacement of populations from conflicts and climate disasters. Additionally, the chapter examines the strategic and humanitarian failures in the Gaza conflict, highlighting how disproportionate military actions erode international support. Finally, it situates these risks within the context of a new Cold War, as emerging multipolar tensions between the U.S., China, and Russia challenge Western hegemony. Ultimately, the chapter calls for renewed public awareness, global cooperation, and decisive political action to mitigate these intertwined threats and prevent irreversible damage to human civilization.