Outdoor light pollution worsens in VietnamVietNamNet Bridge – Vietnam is faced with increasing outdoor light pollution, which can be harmful to physical and mental health, according to local experts. Light pollution has worsened in recent years, experts say. In many alleys of HCM City, for instance, many 0.6-1.2m fluorescent and halogen lights are used to light streets. At night, light throws the body’s biological clock and circadian rhythm out of whack, disturbing sleep, according to Harvard University’s Medical School website. Experts at the Harvard Medical School said that people should use dim red lights for night lights.

Source: VietNamNet News May 23, 2018 07:18 UTC