A mighty cheer erupts from El Sadar — Pamplona's massive soccer stadium. Ossasuna, the local team, is winning. Iker Zuriguel estimates there are some 20,000 to 25,000 people inside the stadium ...
When a crowd becomes especially big and dense, like at a pilgrimage or a concert, things can get dangerous fast. A Spanish researcher is using physics to understand how they move, and hopefully, how ...
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