video: Start of the 2018 Bank of America Chicago Marathons, sped up 20 times. This material relates to a paper that appeared in the 4 Jan. issue of Science, published by AAAS. The paper, by Nicolas Bain at Univ. Lyon in Lyon, France, and colleagues was titled, "Dynamic response and hydrodynamics of polarized crowds." view more
Credit: [Credit: Nicolas Bain and Denis Bartolo]