Although academic institutions dominate the natural-science focused Nature Index, there is notable contribution from industry, which in 2014 represented nearly a quarter of institutions in the index, contributing to nearly 7% of articles. Analysis of collaborations in the index from 2012 to 2014 reveals several global hotspots in East Asia, Northwest Europe and the United States where there are multiple industry-academia collaborations (see 'Industrious world'). And although there are several factors behind this geographic clustering, ease of communication is eroding many of them.
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