plan only if enough food could be contaminated with the weapon to kill half a million people.

⁹⁰Sr contamination in the environment

is not quite as likely as to be released as a part of a nuclear reactor accident because it is much less volatile, but is probably the most dangerous component of the radioactive fallout from a nuclear weapon.

A study of hundreds of thousands of deciduous teeth, collected by Dr.Louise Reiss and her

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