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

National Nuclear Security Administration

The Energy Department just made one plutonium pit. Making more is uncertain

By Dylan Spaulding | Nuclear Weapons

Stacks of money. Accessed via Wikimedia Commons. Credit: geralt. CC0 1.0.

500,000,000,000 reasons to scrutinize the US plan for nuclear weapons

By Kingston Reif, Mandy Smithberger | Nuclear Risk, Nuclear Weapons