Satellite imagery reveals increasing volatility in human night-time activity - Tian Li; Zhuosen Wang; Christopher C. M. Kyba; Miguel O. Román; Karen C. Seto; Yun Yang; Shi Qiu; Theres Kuester; Michail Fragkias; Xiang Chen; Thomas H. Meyer; Chadwick D. Rittenhouse; et al. (Nature, 2026)