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

Watch the 2025 Doomsday Clock announcement on January 28


Martyl Langsdorf

Martyl Langsdorf (who went professionally by her first name only) was a Chicago artist who served as art editor of the Bulletin for many years, whose drawings enlivened its pages, and who is credited with creating the Bulletin’s iconic Doomsday Clock.