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What Colour is the Sun? The Universe Inside You. Build Your Own Time Machine. A Brief History of Infinity. The Man Who Stopped Time. Too many people find science dull and uninspiring. He still manages to surprise me with something new on every page. Get Involved in the new Capel! Pre-order a signed copy.

Fringe-thoughts at the margins of a sociological imagination. The Wikipedia Gender Gap Revisited. Recently published in the open access journal PLOSONE. And I build on new research in survey methodology. To describe a method for estimating bias in opt-in surveys of contributors to online communities. We use the technique to re-evaluate the most widely cited estimate of the gender gap in Wikipedia.

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Writing History in the Digital Age. A born-digital, open-review volume edited by Jack Dougherty and Kristen Nawrotzki. Open-access online and in print. By University of Michigan Press. Buy the 2013 book or read free online. From University of Michigan Press. Writing History in the Digital Age. 2011 Fall Open Peer Review. Pasts in a Digital Age.