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First global light pollution map

First global light pollution map
Who
The World Atlas of the Artificial Night Sky Bright
What
First
Where
Not Applicable
When
2001
Light pollution in urban areas drowns out much of the natural night sky. In addition to representing energy waste, it can lead to confusion in nocturnal species. In 2001, Italian and American astronomers released the first global map highlighting the problem. According to the data, around 20% of the world’s population can no longer see the Milky Way in the night sky from their homes.