573k 
238k 
37k 
Subscribe 
Light Pollution: Everything You Need to Know
The vast majority of the populated planet cannot see the natural night sky because of light pollution; fewer still are the number of Americans or Europeans who can.
light pollution
Which U.S. Cities Are the Most Dangerous for Migratory Birds?
What are the most dangerous U.S. cities for migratory birds? That’s the question answered by a new study published last week in Frontiers in Ecology and the Environment, which looked at the problem of light pollution. Seventy percent of bird species present in the U.S. are migratory, and more than 80 percent of those species […]
Big Cities, Bright Lights: Ranking the Worst Light Pollution on Earth
By Dipika Kadaba The amount of artificial lighting is steadily increasing every year around the planet. It’s a cause for celebration in remote villages in Africa and the Indian sub-continent that recently gained access to electricity for the first time, but it is also harming the health and well-being of residents of megacities elsewhere that […]
NASA’s Earth at Night Images Are ‘Mind-Boggling’
NASA scientists created the most complete map of Earth at night to date—showing humans in all of their electric glory. But, while the photos are magical, they also show human’s extreme effect on the planet. The map, which shows a nightly Earth as it was in 2016, was made through a composite of images collected […]