Somveille, M.; Wikelski, M.; Beyer, R. M.; Rodrigues, A. S. L.; Manica, A.; Jetz, W.: Simulation-based reconstruction of global bird migration over the past 50,000 years. Nature Communications 11 (1), 801 (2020)
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.