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Outer space: Monkey business
The tsunami of December 26th 2004 has focused the world's attention on this terrifying consequence of an underwater earthquake.
explores the underlying wave mathematics.
Exploring the Enigma
During the Second World War, the Allies' codebreakers worked at Bletchley Park to decipher the supposedly unbreakable Enigma code.
tells us about their heroic efforts, which historians believe shortened the war by two years.
In the first of two articles,
takes a tour through the history of codes and the prospects for truly unbreakable quantum cryptography.