Calovi, D. S.; Lopez, U.; Ngo, S.; Sire, C.; Chate, H.; Theraulaz, G.: Swarming, schooling, milling: phase diagram of a data-driven fish school model. New Journal of Physics 16, 015026 (2014)
Scientists studying a rare population of tool-using chimpanzees have found that aging can have a profound impact on their abilities—but not all chimps decline equally.