2015-01-21 Light Pollution. How Much Light is Too Much?
Everyone who loves looking up at the night sky knows one thing: to see the most stars … get away from a city. In cities, artificial light comes from street…
2001-08-31 Light Pollution
This is with the VOA Special English Environment Report. We usually think of pollution as a harmful waste substance that threatens the air and water. But some people have become…