Light pollution is an ever-growing problem that is blocking out the night sky in major cities, obscuring all but the moon and a few bright stars and planets. Bob Parks, executive director of the International Dark Sky Association joins “CBS This Morning: Saturday” to discuss what can be done to combat this growing problem.

http://www.cbsnews.com/videos/how-bad-is-light-pollution

Light pollution is an ever-growing problem that is blocking out the night sky in major cities, obscuring all but the moon and a few bright stars and planets. Bob Parks, executive director of the International Dark Sky Association joins “CBS This Morning: Saturday” to discuss what can be done to combat this growing problem.

http://www.cbsnews.com/videos/how-bad-is-light-pollution