Overview reveals the natural phenomena and human forces shaping our planet.
EPISODE 1
How the Blue Ridge Mountains Lost Their Blue
The hazy blue was disappearing from the horizon, but it wasn’t just the trees' fault.
EPISODE 2
Meet the Fire Lookout of Big Sky Country
Are real-life fire lookouts becoming obsolete with modern technology?
EPISODE 3
Wild Horses: America's Most Beloved Invasive Species?
How can we respect these horses and keep them wild while protecting the islands?
EPISODE 4
Unlocking the Mysteries of Autumn Leaves
What causes that brilliant fall color show that people adore?
EPISODE 5
Climbers’ Paradise is the Last Refuge for an Ancient Species
Red River Gorge is a haven for rare species and a place of many surprises.
EPISODE 6
Who Made These Giant Desert Figures... and Why?
Who made this mysterious collection of rock paintings carved into the earth?