National Science Politics & Government Health & Safety Why People Believe Conspiracy Theories 5:18pm December 11, 2016 News U.S. Politics Science Humans Mental Health Share URL copied to clipboard! Copyright 2016 NPR. To see more, visit http://www.npr.org/. 300x250 Ad More All Things Considered Arts Yiddish is making a comeback National Pedestrians hear AI-generated messages from billionaires at hacked crosswalks 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate