Sohu: The stampede near Mecca as a fluid dynamics problem
Professor Dirk Helbing was quoted in Sohu - the news portal of the Chinese media corporation based in Beijing.
external pageThe article (in Chinese) was published in Sohu in September 2015. Sohu quoted Professor Dirk Helbing.
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"When the density of the crowd becomes too high, any little movement can cause an intense pressure on people standing nearby," Professor Helbing said.