https://www.space.com/11234-earth-hour-2011-night-sky-light-pollution.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+spaceheadlines+%28SPACE.com+Headline+Feed%29&utm_content=Google+Reader
Earth Hour on Saturday (March 26) is a good time to ponder the effect of light pollution on stargazing. Light pollution from city lights has a serious impact...
the night skyearth hourlight pollutionprotectingspace
https://www.space.com/nasa-new-sensor-improves-air-pollution-monitoring
For the first time, a space-born smog sensor will be able to provide data on the distribution of air pollutants over America non-stop and in real time.
air pollution sensornasanewmonitorsmog