The industrial revolution drastically changed our cities, initiating them shining with light. Developing technologies have caused settlements to ever brighter, as lights have advanced from whale oil to electricity. But those improvements came with a harmful consequence – light pollution. Approximately 80 percent of people live in an area that’s immersed in artificial light at nighttime. In Western Europe and the United States, that number shoots up to more than 90%. Light pollution affects nature and humans, changing the plants’ phenology, the hunting habits of nightly animals, and human rest cycles.
Life on our planet is concentrated mainly in the eastern part of North America, Western Europe, and Southeast Asia. From space at night, Las Vegas is the brightest city on our planet. North Korean Pyongyang is the darkest.
The United States
The eastern coast of the Mediterranean Sea and the Nile Delta has the highest population density in the Middle East.