Sigrid talks about the different ways to get from Brooklyn to Manhattan, and about some of the characteristics of this borough. For one thing, it is more affordable than Manhattan, although by no means a cheap place to live.

Color and new life returns to Yellowstone as summer returns, and the animals race to make the most of this window of warm weather, which they know will be as brief as it is bright.

This is a landscape in constant flux, with a live supervolcano simmering beneath the surface. But for the young animals, there is now time to relax and enjoy the warmth and tranquility of the late summer. As they move towards maturity, a mellow sunlight shines on peaceful scenes in Yellowstone National Park.

The height of summer brings striking rainbow colors to one of Yellowstone’s hot springs. This is also the peak of the bison rut, when the park’s muscular bulls challenge one another for the opportunity to mate.

Autumn arrives, and the bison rut draws to an end. For many animals, this is a time of quiet preparations. They are getting ready for the hardships of another winter as the cycle of the seasons continues.

Having explored the Bronx and Brooklyn, Sigrid now tells us all about Queens, which is geographically speaking the largest of the 5 boroughs of New York City.

To get from eastern Long Island to the city, travelers and commuters have to go through Queens, so this borough naturally became a very important transit hub, with Jamaica at its center. It also became crisscrossed with many expressways for vehicles.

It's time to have a look at Staten Island, the 4th borough out of 5. It looks closer to New Jersey than to the rest of New York City and has some other peculiarities.

We've finally made it to Manhattan, the smallest but most densely populated borough. When we think of New York City, Manhattan is more often than not what comes to mind. This is part 1.

In part 2 about the borough of Manhattan, Sigrid completes her overview of all 5 boroughs of New York City. She talks about some nicknames for New York City, including "the Big Apple."

We’ve all seen footage of the first men walking on the moon... but how exactly did they get there? This video details the fascinating, many-faceted construction of the Apollo 11 spacecraft so that we can see exactly what happened in what order to make this incredible journey a reality.

After exploring the five boroughs of New York City, we move on to Princeton, New Jersey, where Sigrid gets curious about a canal built in the early 19th century.

What makes canals so special? In part 2, we explore locks. Locks are like elevators for barges and boats!

This last part about the D&R canal talks about the special bridges that were needed to cross the canal and who had to take care of them. And if you're wondering if the canal is still in use, Sigrid answers that question. There's a special tribute at the end of the video for which you might want this link.

We're back on Long Island, exploring the North Shore with an outing to a wildlife refuge on one of the necks, or small peninsulas that jut into the Long Island Sound, the body of water separating Long Island from Connecticut.