Why We Are Losing the Night Sky

Teacher or professor: It's Okay To Be Smart
Subject: Knowledge
Content of the Lesson: Check out America From Scratch: https://youtu.be/LVuEJ15J19s SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ It never gets dark anymore. Not REALLY dark, anyway. Not like it used to. Most humans on Earth live under light polluted skies. That's because, 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. The problem is, we need darkness for our health, and for the health of wildlife and ecosystems, and we’re not getting enough of it. I traveled to McDonald Observatory in far west Texas, one of the darkest places in North America, to learn what people are doing in order to preserve dark skies, and to see truly dark skies for myself (and so I could show them to you!). This video features time lapse night sky images that I’ve been collecting for the past few years, and I hope they make you feel something special. Turn out the lights, keep looking up, and don’t be afraid of the dark. #lightpollution #darkskies #astronomy SOURCES/MORE INFO: https://sites.google.com/view/light-pollution-sources/home ----------- FOLLOW US for more curiosity: Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Books from our episodes: http://smart-books.tumblr.com/


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