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A study of the night photos of the world, artificial lighting and its brightness around the world is increasing day by day.

Only the use of artificial light outside the house has increased by 2 percent every year from 01 to 2016.

Scientists say the use of LEDs and fluorescent lamps is 'losing the night' from many countries. They have also warned that there is a negative effect on 'living organisms, animals and human lives'.

The study, published in the American Journal of Science Advance, has been published.

This study was done with the help of NASA satellite radiometer specially designed to measure the brightness of the night light.

According to the study, the rate of brightness in different countries has been found to be different. In the US and Spain, especially for the 'bright night', the average is uniform, but the use of artificial light and its brightness in South America, Africa, and Asia is increasing.

In the war-torn countries such as Syria and Yemen, the brightness of the night decreased.

In satellite imagery, the night sky is sparkling in the cities spreading like coastal and spider nets, but scientists say this trend has adverse effects on human health and the environment.

In 2016, the American Medical Association reported that the blue light of the very intense but weak design was risky for melatonin for the human hormones needed for sleeping. They also encouraged various communities to reduce the use of such lights.

A recent study published in Nature magazine said that due to artificial lighting, the activity of the nyctal insect changes and the pollination of crops is damaged.

A UK study found that more bright areas of plants have dropped more than a week before compared to other areas. The dramatic changes came in the behavior of the nibble migratory bird by increasing the amount of light in the city area.

Christopher Kaiba of the German Research Center for Geoscience, the head of the researcher's team that took photos of NASA satellite radiometer, said that the use of artificial light was becoming a serious threat to the environment.

He thought that the brightness of the night would reduce the use of power-saving LEDs instead of sodium lamps, which are rich in industrial and industrial cities, but it did not happen, he said.

"The brightness in the United Kingdom and Germany is increasing as the brightness of the US is much earlier," he said.

Satellite radiometer Led's blue light could not be identified, due to the fact that the whole night's picture has not come up. Researchers fear that the eyes of the person can see the blue light so that their losses are more than the idea.

The amount of artificial light now has increased so much that it is difficult to find the natural light at night in Europe, said Exeter University professor Kevin Gaston. Artificial lighting is affecting the eyesight of the people, and fears that the damage will not be easily met.

Scientists say it is possible to deal with the loss of eyesight by lighting a little light power lamp in the city areas.

"People's eyes do not depend on the abundance of light. We can improve eyesight by removing the bright light outdoors. Through this, fuel can be stored, even though the information data we have is saying that we are not walking on a domestic or global scale. "