Ever year, the winter solstice comes on December 21 in the Northern Hemisphere. Not only is it the first day of winter, it's a turning point, as the days will then get longer.

Sigrid explains how a spelling bee normally proceeds. There are fixed rules and there are options.

In recent years, we've seen an increase in the intensity of tropical storms and hurricanes due to global warming. But how and why do hurricanes form? Sigrid provides a basic explanation of this phenomenon.

We continue to explore the phenomenon of hurricanes. Why are they so dangerous? And do they serve any purpose?

In this video lesson, Luana explains the names given in English to our nearest and dearest relations: the brothers, sisters, cousins, parents, uncles and aunts that make up our family tree.

We tend to associate pizza with Italian culture, but it actually has a long history in the United States. However, its reputation as a cheap meal option may be changing.

Native New Yorker John S. tells us about a work of art that awaits travellers at one New York Subway station.

See if you can figure out what Sigrid is describing. Don't worry! She will give you a little time to think and then give you the answer (with some extra information, too).

John looks out across the Hudson River and explains the appeal of New Jersey for many residents who have recently moved there from New York City.

Abi carefully packs her picnic basket with food and utensils, and is off to the park to set everything up for today’s elegant picnic!

Central Park lies between the East and West Side of New York City, and today John is there by the frosty waters of the Jackie Kennedy Onassis Reservoir. It’s a popular place for New Yorkers to go jogging, and was once featured in a movie starring Dustin Hoffman.

John shows us some impressive murals in New York, all of which are by Brazilian street artist Kobra and depict famous artists, musicians, and historical figures.

The European Union has been in the news a lot lately, so let's take a look at what it's all about. What is a "union" and what's the purpose of this one?

John talks about the importance of the city park, no matter how small, in the modern world. He enjoys the open space, fresh air, and sun on his face. He also likes the changing seasons, which mark the passing of time.

Try to guess what word Sigrid is describing using the clues she gives you. Remember: You can always click "pause" if you need more time!