Lone wolves and home-grown terrorists: Experts warn of a growing threat from unusual sources

By Malik Siraj Akbar

In guarding against terrorism, extremists can’t be overlooked

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GAO says Congress is in the dark about anti-terrorism efforts across government

By Laurel Adams

WMD nonproliferation needs more attention

By The Center for Public Integrity

Former U.S. nuclear commander startles with proposal to cut weapons arsenal by 80%

By R. Jeffrey Smith

Hospitals failing to secure dirty bomb materials

By Aaron Mehta

Hospitals failing to secure dirty bomb materials

By Aaron Mehta

Hospitals are failing to secure potential dirty bomb materials, says GAO

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How an 82-year-old exposed security lapses at nuclear facilities

By R. Jeffrey Smith

Nuclear testers can run but not hide

By R. Jeffrey Smith

The politics of energy: Nuclear power

By Kevin Bogardus

Nuclear miscalculation: Why regulators miss power plant threats from quakes and storms

By Susan Q. Stranahan

Excerpts from this story referencing "Dirty bomb":

"… sed to make a bomb on the scale of those used in Hiroshima and Nagasaki.“Dirty bombs are weapons of mass distraction, not weapons of mass destruction,” says …"