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August 12, 2020 - Phys.org

The Moon and stars are a compass for nocturnal animals – but light pollution is leading them astray

The Moon and stars are a compass for nocturnal animals – but light pollution is leading them astray
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Many nocturnal animal species use light from the moon and stars to migrate at night in search of food, shelter or mates. But in our recent study we uncovered how artificial light is disrupting these nightly migrations.

Electric lighting is transforming our world. Around 80% of the global population now lives in places where night skies are polluted with artificial light. A third of humanity can no longer see the Milky Way—the galaxy our solar system belongs to. But light at night has deeper effects. In humans, nocturnal light pollution has been linked to sleep disorders, depression, obesity and even some types of cancer.

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