
How The Earth Was Made
The Hawaiian Islands are the most remote island chain on the planet.

The Hawaiian Islands are the most remote island chain on the planet.

Why do we have ice ages and when is the next one due?

Largest, most fearsome volcanic island, we'll explore Iceland's fiery mystery.

The San Andreas Fault runs roughly 800 miles.

The Marianas Trench is the deepest place on earth.

Gold originates from our solar system's supernova, concentrated on Earth.

The Alps is Europe's most important geographic landmark.

The Hawaiian Islands are the most remote island chain on the planet.

Why do we have ice ages and when is the next one due?

Largest, most fearsome volcanic island, we'll explore Iceland's fiery mystery.

As Rome declines, the Colosseum lies empty.

Only one of Rome's emperors steps into the arena: Commodus.

Galen of Pergamon makes a name for himself as a physician for gladiators.

Only one of Rome's emperors steps into the arena: Commodus.

Galen of Pergamon makes a name for himself as a physician for gladiators.

The public execution of criminals is a staple in the Colosseum.

In 107 AD, the crowd is treated to a rare spectacle: female gladiators.

Master builder Haterius constructs the Colosseum.

In 80 AD Emperor Titus opens the Colosseum with 100 days of spectacular games.

As Rome declines, the Colosseum lies empty.