Columbus Day has always been a controversial holiday in the United States. In this video, Sigrid goes back in time to get some historical background, which sheds a new light on its significance.

What do people traditionally do on Memorial Day and Labor Day? Let's find out.

Sigrid talks about two important US holidays, Memorial Day and Labor Day. They are quite different in what they commemorate, but they're combined here because many Americans see them as bookends to the summer season.

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?

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

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.

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.

Inauguration Day was special this year. In this video, Sigrid recalls some of the highlights and what was particularly striking to her as she watched it. Best of all, you can watch Amanda Gorman recite "The Hill We Climb" right here on Yabla!

In the United States, a presidential inauguration takes place every four years. The US now has a new president, Joe Biden, and Kamala Harris was sworn in as the first woman vice president. Part 1 of this video takes a look at the day before the inauguration.

Just how powerful is a dog's sense of smell? Today, search dog Fern is going to test out her abilities to see if she can find a canister filled with pork meat in the middle of a lake, under 7 meters of water and mud.

Lots of English words can serve as nouns, verbs, or adjectives depending on the context. Sometimes even the pronunciation changes. Let's look at the slogan "Black Lives Matter" in both a grammatical and historical context.

Nursery rhymes are for children. The rhyme about Humpty Dumpty, however, is so famous that it's been used in literary and cinematic contexts as well.

Sigrid finishes carving her pumpkin and places the candle inside so we can see the final effect of the jack o' lantern. Happy Halloween!

The pumpkin is ready to carve out. Sigrid explains that pumpkins are indeed an edible type of squash and not just for making into jack o' lanterns. In fact, one pumpkin can become both a pumpkin pie and a jack o' lantern.

One way to prepare for Halloween is to make a jack o' lantern. In this segment, Sigrid explains what a jack o' lantern is, and how kids and adults celebrate Halloween.