Trailer: Season 1

Throughout human history, cities have grappled with how to keep excrement separate from drinking water. In the Middle Ages, gong farmers excavated human waste from city dwellers and took it to the countryside to be used as fertilizer. In the 19th century, cities grew so big, this ...  Show more

Just how hard is it to keep wastewater out of our drinking water? Super hard. In this episode, we take a look at the lengths one great American city, Chicago, went to in order to keep the source of its drinking water clean. Reverse the flow of the river? Why not? Then we explore ...  Show more

Deep in the Rising Star Cave system lies a mystery of paleoanthropology: a chamber filled with the bones of Homo naledi. How this species evolved, how it’s related to us and other human relatives, and how it got so deep in the caves are among the many open questions researchers a ...  Show more

Embark on an unprecedented journey of discovery unravel the mysteries surrounding a lost civilization, the Tartarian Empire, and the elusive phenomenon known as the mud flood. Join us as we dive into the questions that have lingered in the shadows of history—was there truly a ...

Cultures around the world have myths that speak of a mysterious underground kingdom that exists deep within the earth, hidden away from the primitive and violent surface-dwellers: which is us.Picture a society untouched by time, unscathed by war, and unaffected by natural disaste ...  Show more

When you envision what Earth was like 4.5 billion years ago, shortly after its creation, images of dust-filled air and raging volcanoes tend to come to mind. However, amidst all that chaos, hidden within the rocks and atmosphere, what if water was also present? Traveling back ...