Fake news is a term that’s come to define our current political landscape, but it’s nothing new. Propaganda, lies, and fairy tales have always been part of human discourse. In this week’s Exploradio, we talk with two researchers looking into the psychology behind believable falsehoods and how to guard against them. We live in an age where facts are called into question, and the truth is slippery. Made-up stories are fed to Americans from sources in Eastern Europe , spreading through social media