US media said that high-intensity LED street lights (such as those used in cities such as Seattle, Los Angeles, New York, and Houston) emit invisible blue light, which may interfere with sleep or increase cancer, cardiovascular disease, etc. The risk of disease, this is the latest warning issued by the American Medical Association. According to the US Daquan News Network quoted the "Washington Post" on September 25, the American Medical Association also warned that these LEDs will affect the visibility of people driving at night. In recent years, experts have raised similar concerns. The report of the American Medical Association proves that worry is not unfounded. At the same time, the report also prompted states and cities across the United States to reassess the intensity of their installed LED lights. According to a report by the US Department of Energy last year, nearly 13% of regional/road lighting in the United States currently uses LED lights. According to the report, the LED lamp saves half of the energy compared to the yellow orange high-pressure sodium lamp it replaces. Compared with the 2-5 year life of the high-pressure sodium lamp, the LED lamp has a service life of 15-20 years. [Extended reading] Light is too dense to affect hormones that can disturb sleep or cause cancer Foreign media said that if you want to watch the night sky, you must stay away from the city. Street lights, buildings, signage, and artificial light from cars make you barely see the stars. An advocacy advocated that Washington has a darker night sky and its group promotes the reduction of these artificial light to benefit people and the health of the planet. According to the Voice of America website, the lights in Washington are very bright and can be seen in space. Excessive light like this can disturb sleep, affect hormones, and even cause some cancer. Jim, President of the International Dark Sky Association? Doherty said that too much light is harmful to the earth. He said: "We put carbon dioxide in the sky. If we burn natural gas or coal, we will send the light directly to the sky, causing global warming." But how much light is too much? Doherty believes that there are too many areas near Capitol Hill, and densely arranged street lights shine around. However, the glare has no effect on the couple. The wife said: "This makes me feel safe. I can see the surroundings completely, knowing that no one will hurt me. It is very reassuring." The husband also said: "This area is very good. The population is large. So the lights are just right. Not very bright, but if you want to have a romantic dinner on the 8th Street, the lights are just right." But Doherty believes that the street lights here are twice as large as the streets. He said: "In fact, enough lighting is enough. If you suspect this, you are not raising public safety, but increasing costs, consuming more fuel, worsening climate change and endangering health. So this is Typical over-lighting." But people have better choices, like in some apartment buildings, the traditional lighting has been changed to spotlights, only to where they are needed. Dolty said: "The front of this building is dark. This way there is no light pollution at home. Health is also protected." There are signs that the wide streets near the US Congress will change. Pedestrian road lights with protective covers will facilitate passers-by. In addition, other cities are gradually adopting new lighting standards to reduce waste and protect public health. Doherty, president of the International Dark Sky Association, said: "People are still developing other technologies. When you walk into a park or drive on the road, the lights will light up because they are equipped with motion sensors. When someone lights, the lights will be on, no one will Go out." Illumination controlled by this device can reduce lighting by 90% and still be effective. Doherty hopes that more communities will adopt these methods so that people will be able to see the stars when they look up at the sky at night. Water Purifier,Water Purifier System,Household Water Purifier,Commercial Water Purifiers Jinan Mucho Commercial Inc. , https://www.muchovet.com