Enjoy the latest content from your local PBS station
Use My List to save your favorite shows and videos for later
Sync your viewing history and pick up where you left off on any device
By creating an account, you acknowledge that PBS may share your information with our member stations and our respective service providers, and that you have read and understand the Privacy Policy and Terms of Use.
Season 7 Episode 16 | 10m 26s
| Video has closed captioning.
It never gets dark anymore. Not REALLY dark, anyway. Not like it used to. Light pollution is not only making it more difficult to see the night sky, but it's also affecting our health. For the past century and a half, since the dawn of electric light, we’ve been losing our connection to the night. We need artificial light for modern society, of course.
