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

Watch the 2025 Doomsday Clock announcement on January 28


Alex Droster

Alex Droster is a graduate student at the University of California, Berkeley, who studies direct detection of low-mass dark matter. His research interests include quantum metrology and nuclear nonproliferation.


Articles by Alex Droster

Iskander-M short-range ballistic missile system with two 9M723K5 missiles, at a Russian demonstration of military technology in 2017. The Iskander system is reported to be capable of firing ballistic missiles that can carry a tactical nuclear warhead. Photo by Vitaly Kuzmin

As tensions mount on Ukraine’s borders, it’s time to understand what led to the INF Treaty’s demise

By Aaron J. Berliner, Jake Hecla, Michael Bondin, Austin Mullen, Elena Osorio Camacena, Alex Droster, Dinara Ermakova, Tyler Scott Nagel, Nicole L. Nappi, Katherine J. Oosterbaan, Sarah R. Stevenson, Chelsea D. Willett, Eric F. Matthews, Manseok Lee, Karl van Bibber, Michael Nacht | Nuclear Risk, Nuclear Weapons, Opinion, Voices of Tomorrow