“Artificially lit surface of Earth at night increasing in radiance and extent”

C. M. Kyba, T. Kuester, A. Sánchez de Miguel, K. Baugh, A. Jechow, F. Hölker, J. Bennie, C.D. Elvidge, K.J. Gaston, L. Guanter Science Advances Vol. 3, no. 11 (2017)