Light pollution: The dark side of keeping the lights on

Twenty five years ago, Los Angeles experienced a massive power blackout due to an earthquake. The entire city was thrust into darkness. The emergency call service, 911, was inundated with panicked residents reporting "a giant ...

Scientists discover that charcoal traps ammonia pollution

Cornell University scientists Rachel Hestrin and Johannes Lehmann, along with collaborators from Canada and Australia, have shown that charcoal can mop up large quantities of nitrogen from the air pollutant ammonia, resulting ...

Skyglow over key wildlife areas

Light pollution affects the skies over most of the world's key wildlife areas, new research shows.

Image: Mapping the night

Imaging Earth from space is a favourite pastime for astronauts on the International space Station. They can set their cameras to automatically snap photos while they work, but often make time to Earth-gaze and take photos ...

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