We collect data on the movement and productivity of elite scientists. Their mobility is remarkable: nearly half of the world's most-cited physicists work outside their country of birth. We show they migrate systematically towards nations with large Ramp;D spending. Our study cannot adjudicate on...

In universities all over the world, hiring and promotion committees regularly hear the argument: this is important work because it is about to appear in prestigious journal X. Moreover, those who allocate levels of research funding, such as in the multi-billion pound Research Assessment Exercise...