Outdoor light pollution worsens in Việt Nam
LED lights on outdoor advertising signs and displays on Hàng Xanh, Điện Biên Phủ and other streets also contribute to light pollution in the city. Signs and displays have different sizes of lights as well. […]
vietnamnews.vn
Wed, May 23, 2018 at 4:44 PM
Wed, May 23, 2018 at 4:44 PM