With a development of the order of 6 % per year worldwide (3 % a France), light pollution now affects nearly 20 % of the Earth's surface.
Pamoja na maendeleo ya utaratibu wa 6 % kwa mwaka duniani kote (3 % sw Ufaransa), mwanga uchafuzi sasa huathiri karibu 20 % ya uso wa dunia.