Why do some of the national parks in the United States resemble the European Alps? Geologist Dr. Robert Darga answers this question.

Why are some rock formations and animals found on more than one continent? The explanation dates back to the Ice Age.

In Yellowstone Park, visitors can see many indigenous animals in their natural habitat and wonder at the park's natural hot springs.

Geysers represent a very popular tourist attraction in Yellowstone Park. How do they work and where do they come from? And what is sandstone? The video answers these questions.

In this segment, we learn about the role weather plays in the creation of rock formations in the national parks of the United States.

We learn more about how water interacts with the minerals in the rocks, and visit Monument Valley, a popular spot for filming westerns and commercials.

The Colorado Plateau and the Grand Canyon are just a few of the amazing geographical features of the Southwestern United States.

We visit Bryce Canyon, where valuable fossils have helped understand the geological history of the planet. The sandstone spires of the canyon are breathtaking.

In this segment, the narrator explains where the name Bryce Canyon came from, and why the sand dunes in the US and the large deserts of the world might be related.

The narrator explains how the breathtaking rock formations of Antelope Canyon came to be, and why mountains around the world can provide a metaphor for human existence.

Julia and Rachael are young American women living in Berlin. Maggie, a friend of theirs from the United States, is coming for a visit. They are pretty excited about Maggie's arrival.

The three girls are happy to be reunited, and Maggie gets settled into the apartment. She feels lucky to have such good friends.

The three friends have breakfast together, do some catching up, and muse about the future. Who knows, will they all end up living together in Berlin one day?

Living together can be challenging, even for good friends. Maggie, as a guest and friend, can't help but notice that Julia is feeling frustrated about something.

It turns out that Rachael is also unhappy, and Maggie is feeling more and more uncomfortable about being in the middle of things.