Image recognition algorithms, military satellites, and mobile data networks can all help estimate crowd sizes. But the underlying maths still comes down to a basic formula: density multiplied by area.
Academic rigor, journalistic flair
Articles on Marches
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Being the media-savvy women that they were, suffragists realized they needed to come up with a meaningful, recognizable brand.
Why are headteachers from across the country protesting at Westminster?
Gay pride has many exuberant advocates. It also has critics in unexpected places.
Top contributors
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Director, Nottingham Institute of Education, Nottingham Trent University
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Professor of History, University of Washington
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Professor of Cyber Security Practice, Edith Cowan University
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Visiting Assistant Professor, Case Western Reserve University
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Research Fellow in Computing and Security, Edith Cowan University
