Crash Course on Instagram: "John Green returns to Crash Course as the host of Crash Course Religions. The YouTube star, author, and noted tuberculosis-hater did a brief stint as a student chaplain after majoring in religious studies. John’s work frequently explores themes of meaning-making and how a single human life fits into our communities and our cosmos. He lends his unique brand of humor and thoughtfulness to this series that asks big questions with Crash Course’s signature curiosity and pl