All Litvinenko articles
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Review
A very expensive poison
Christopher Barnard puts the latest Litvinenko account under the magnifying glass
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News
Litvinenko inquiry unveils scientific sleuths at heart of investigation
Anonymous forensic investigators and chemists tracked trail left by dissident’s killers
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Opinion
Dial chem for murder
Poisons may seem to be a murderer’s perfect accomplice, but chemists can always persuade them to betray their secrets, says Philip Ball
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Opinion
A century of isotopes
Once appalled by the military use of his discoveries, Frederick Soddy would pleased by his legacy today, says Mark Peplow