The authoritative guide to ensuring science and technology make life on Earth better, not worse.

Watch the 2025 Doomsday Clock announcement on January 28


Derek Leebaert

Derek Leebaert’s books include To Dare and to Conquer: Special Operations and the Destiny of Nations, from Achilles to Al Qaeda and The Fifty-Year Wound: How America’s Cold War Victory Shapes Our World. He serves on the advisory board of the US Army Historical Foundation and is a partner in the global management consulting firm MAP AG.