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Opinion: February 2009
The nuclear threat: a new start
As US President Barack Obama takes office, his leadership will be needed to reduce the dangers of the world’s nuclear weapons and to stop nuclear materials from falling into rogue hands, argues Sidney Drell
Journeys to greatness
To practising physicists, the great equations of physics might seem obvious, logical and trivial. But to their discoverers, Robert P Crease argues, that was far from true