Back to Show
Overview
What Happened to America’s First Megacity?
Season 2
Episode 6
In its prime, Cahokia was a prosperous city with a population similar to London’s. But this sprawling Native American metropolis from the Mississippian culture vanished long before Europeans arrived in North America. What happened? Now, cutting-edge scientific research offers a glimmer of hope in unraveling the mystery of Cahokia's disappearance.
Support Provided By
7:52
US streets are designed to move cars as fast as possible. Is it time for that to change?
10:39
Protestors protect threatened forests that contain rare ecosystems at risk of destruction.
9:29
Follow host Joe Hanson as he learns why his home state of Texas is turning to wind power.
8:54
How billions of pounds of garbage gets turned into energy.
8:24
To prevent avalanches, you have to do something counterintuitive — you have to start them.
9:46
Traffic is a problem we need to finally solve, and automated vehicles might help us do it.
7:46
It’s one long mile of towering ice cliffs and it’s all human-made. How do they build it?
7:49
Dive into the beauty and physics of drones with an FPV pilot.
8:28
Bison could be the key to saving America’s lost prairie.
7:19
Who made this mysterious collection of rock paintings carved into the earth?
8:00
Red River Gorge is a haven for rare species and a place of many surprises.