Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards ...

A new University of Zurich study shows that people are more concerned about the immediate risks of AI, like bias and misinformation, than about distant existential threats. Most people are more ...

Celia McDowall is a Scoville fellow with the Nuclear Policy Program at the Carnegie Endowment for International Peace.