Peking University's research now spans 81 countries

Research at Peking University is a global undertaking: the university co-authors with 1,165 institutions in 81 countries, and international collaborators appear on 29% of its output.

Its largest single research relationship is with Tsinghua University in China, at 13,411 joint works. Across the network, five-year output reaches 164,145 co-authored works.

Connectivity of this kind is increasingly the currency of modern science, and it is measurable: the open scholarly record makes every one of these relationships public and checkable.

The Research Collaboration Index, the first global account of how universities actually collaborate, publishes its first full edition on Tuesday 15 September at 09:00 UK.

Every figure derives from the open global research record and is checkable at source.