The SMOKING GUN that proves humans are causing climate change

Another YouTube #shorts from your favorite science dad, Dr. Joe! Learn how scientists measure the ancient atmosphere in this video: https://youtu.be/myxVsYI4WZk This episode of Be Smart is licensed exclusively to YouTube. Subscribe today for more great science videos Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart