The headlines declare: We live in a Post-Truth world, characterized by Alternative Facts and Fake News. What the hell is going on? In our most recent episode, "A (Very) Brief History of Truth," we discuss the historical origin and philosophical meanings of the idea Truth. In order to try to disentangle what is meant by Post-Truth and alternative facts, we have to establish the philosophical assertions about Truth, trace the the transformation of the idea of Truth across historical epochs, and identify the boundaries and implications surrounding the debates about Truth. Only then can we investigate what Post-Truth and Alternative Facts really mean. Enjoy!