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Who are the science stars of Twitter?

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Science  19 Sep 2014:
Vol. 345, Issue 6203, pp. 1440-1441
DOI: 10.1126/science.345.6203.1440

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Summary

Genomicist Neil Hall sparked an online tempest this summer by proposing a "Kardashian Index," or K-index, which compares a scientist's number of Twitter followers with their citation counts. Intrigued by the ensuing debate, Science compiled a list of the 50 most followed scientists on the social media platform and calculated their K-index. The analysis reveals that a majority of these star scientists on Twitter are dedicated to science communication. Many also have thousands of citations and use the social media tool to keep up with new research and gather rapid critique from peers. Though Hall meant his metric lightheartedly, some suggest the K-index gets it wrong by implying that science communication and research productivity are incompatible.