For centuries self-assured academics believed Troy was a mythological city -- until, that is, the ruins were discovered. Over the span of history, the human species has lost people, cities and entire civilizations. Occasionally, governments don't want these lost empires to be found. So what happens when a controversial linguist claims to discover an ancient people spanning Iran to Southern China? Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers