9/11 was an inside job. Aliens have already made contact. COVID-19 was created in a lab. Maybe you rolled your eyes at some point while reading that list. Or maybe you paused on one and thought... well... it could be true. Since the first Americans started chatting online, conspiracy theories have become mainstream — and profitable. It's gotten harder to separate fact and fiction. But if we don't know who we can trust, how does a democracy survive? On today's episode, we travel the internet from UFOs, through 9/11, to COVID, to trace how we ended up in a world that can't be believed. To access bonus episodes and listen to Throughline sponsor-free, subscribe to Throughline+ via Apple Podcasts or at plus.npr.org/throughline. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy