Why Do We Cry?

To learn more about Brilliant, check out https://brilliant.org/BeSmart/ You might cry if you don’t SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓Uploaded 17-07-18Why do we cry? It’s weird. Humans leak water out of their faces when they get sad. Are we the only animals that do this? What does it mean? What is it for? Here’s the science of human tears!Give us a hand and SUBSCRIBE! ►► http://bit.ly/iotbs_subReferences: http://bit.ly/2NMz5Wo -----------FOLLOW US:Twitter: @DrJoeHanson @okaytobesmart Instagram: @DrJoeHansonMerch: https://store.dftba.com/collections/its-okay-to-be-smartFacebook: http://www.facebook.com/itsokaytobesmart BOOKS WE’VE FEATURED:http://smart-books.tumblr.com/ -----------It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.Director: Joe NicolosiWriter: Kimberly McCoy, Ph.D.Creative Director: David SchulteEditor/animator: Derek BorsheimProducers: Stephanie Noone and Amanda FoxProduced by PBS Digital StudiosMusic via APMStock images from Shutterstock http://www.shutterstock.com Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices