Light Pollution - The disappearing darkness
November 28, 2016![](https://static.dw.com/image/36504804_800.webp)
Advertisement
At night, city lights kill large numbers of insects, confuse migrating birds, and rob many people of a good night's sleep. Humans have developed their day / night cycle over millions of years -- a cycle that dictates that people work during the day, and relax in the evening. Now, researchers are working on next-generation lighting systems that are more sustainable and work more efficiently.