As of early 2012, the United States maintained an estimated 2,150 operational warheads. The arsenal is composed of roughly 1,950 strategic warheads deployed on 798 strategic delivery vehicles, as well as nearly 200 nonstrategic warheads deployed in Europe.

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Overview

Press Release

2013 Doomsday Clock Symposium

Overview

Do you think the hands of the Doomsday Clock should be closer to or farther from midnight?

Bulletin of the Atomic Scientists Volume 68 Issue 3

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Special issue: Low-level radiation risks

Special issue on the risks of exposure to low-level radiation

The scientific jigsaw puzzle: Fitting the pieces of the low-level radiation debate

Lessons from Hiroshima and Nagasaki: The most exposed and most vulnerable

Principles in practice: Radiation regulation and the NRC

Unmasking the truth: The science and policy of low-dose ionizing radiation

The low-dose phenomenon: How bystander effects, genomic instability, and adaptive responses could transform cancer-risk models

The social amplification of risk and low-level radiation

The perception gap: Radiation and risk

Underestimating effects: Why causation probabilities need to be replaced in regulation, policy, and the law

Nuclear notebook

US nuclear forces, 2012