22:00 28 March 2011 by Andy Coghlan
Which country's scientific output rose 18-fold between 1996 and 2008, from 736 published papers to 13,238? The answer – Iran – might surprise many people, especially in the western nations used to leading science. Iran has the fastest rate of increase in scientific publication in the world.
And if political relations between Iran and the US are strained, it seems that the two countries' scientists are getting on fine: the number of collaborative papers between them rose almost fivefold from 388 to 1831 over the same period.