The Bulletin of the Atomic Scientists — a scientific advocacy group — reset the world’s “Doomsday Clock” at a mere 90 seconds to midnight. The clock, created in 1947, is a symbol reflecting global instability and nuclear threat.
Reset talked to a UChicago professor to learn more about the history of the clock and how a time is picked every year.
GUEST: Daniel Holz, Professor of Astronomy & Astrophysics and Physics, U Chicago