More from Judith Perera
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Technology
Technology: Infrared beam gets the measure of air pollution
News
Soviet Union comes clean on nuclear blast
News
Palatable poisons / Review of ‘The Complete Guide to Food Allergy and Intolerance’ by Jonathan Brostoff and Linda Gamlin
Books & Arts
Chernobyl cleanup casts a political shadow
News
Geologists seek warning system for Soviet earthquakes
News