A commonly cited quote by Ralph Nader, states that a pound of plutonium dust spread into the atmosphere would be enough to kill 8 billion people. It seemsAccording to be common knowledge that"The Myth of Plutonium Toxicity" by Bernard L. Cohen:
Plutonium is constantly referred to by the news media as ``the most toxic substance known to man.'' Ralph Nader has said that a pound of plutonium could cause 8 billion cancers, and former Senator Ribicoff has said that a single particle of plutonium inhaled into the lung can cause cancer.
Is plutonium is "the most toxic substance known to man". Is this true?