• : 1974
  • : 1042
  • : 308
  • PBS
  • 21
  • Documentary

.

52
52x1
What Are UFOs?
Episode overview
22, 2025
After decades in the shadows, UFOs are being studied seriously. Are they weather balloons, optical illusions, secret military technology? Or something else? Follow scientists as they try to unravel the mystery of the strangest objects in our skies.
52x2
Extreme Airport Engineering
Episode overview
29, 2025
In New York City, a team of elite engineers and construction workers are on a mission to build the ultimate airport. Follow their ups and downs as they race to build a new, world-class LaGuardia on the site of one of America's busiest aviation hubs.
52x3
Dino Birds
Episode overview
05, 2025
Why are birds the only dinosaurs still alive today? Rare fossil discoveries are revealing the secrets of bird evolution, telling the story of how some resilient feathered dinos became the vast array of colorful bird species that fill our skies.
52x4
Egypt's Tombs of Amun
Episode overview
12, 2025
Follow archaeologists as they discover a long-lost ancient cemetery in Egypt's sacred desert. Treasures emerge unlike anything seen by the team, revealing details of a unique period when women had remarkable power.
52x5
Pompeii's Secret Underworld
Episode overview
19, 2025
New archaeological finds in Pompeii are revealing that the city, hailed as a sophisticated jewel of the Roman Empire, hid a very dark side. As the evidence unfolds, a much more complex picture of the fated city comes into view.
52x6
Baltimore Bridge Collapse
Episode overview
26, 2025
On March 26, 2024, a massive container ship plowed into the Francis Scott Key Bridge, killing six highway workers. How did the ship lose control? Why did the bridge fail so catastrophically? And how many other bridges around the world are at risk?

Characters