Rosie and Julian, siblings from Canada, travel to London where they put on their deerstalker hats and unravel a mystery. They're provided with clues about Big Ben's shape and then have to find the building. Both kids are also really impressed by the double-decker buses.

Sigrid explains the religious significance of Easter and the various days of Lent. Why do people observe Good Friday, or celebrate Mardi Gras? Find out in this video.

Brilliantly colorful parrot fish and two-bar sea bream are among the fish featured in this segment. Sea cucumbers, the vacuum cleaners of all the Earth's oceans, also make an appearance.

Sigrid goes over examples in which "no" takes the place of "not any." As always, you have to watch out for double negatives.

Five-year-old Nate is a geography expert. Not only does he already know the capitals of all of the states, but he can point out exactly where they are located on a map.

Here are a few tips on using the dictation feature offered with Yabla videos. Sigrid puts it to good use as she works on improving her French.

Corals are sessile animals, meaning they are immobile and anchored to one spot for the entirety of their lives. Stony coral, leathery coral, and sea fan coral are featured in this segment, along with the beautiful fish that inhabit coral reefs.

Nate, a five-year old geography whiz is back on The Ellen Show. He has a long list of foods that he enjoys eating, plus some he doesn't like.

Annette offers an array of ways to greet people, from sunup to bedtime. Ways of greeting people vary from place to place, but Annette provides one general rule — greetings must be cheerful and friendly.

Let's look at the results of the meeting. Was it a good example of teamwork or not?

In this video, Sigrid looks at certain kinds of questions in which it is correct to use "some," the dreaded double negative, and negative statements that can be expressed in two different ways.

This is a short video showing some of London's best-known sights, such as Trafalgar Square, Tower Bridge, and the Tate Modern.

The earth's bodies of water are the focus of this film about evolution. As the narrator points out, the vast depths of the earth's oceans remain barely explored.

Nate is a preschooler whose love for geography, countries, flags, and more has really put him on the map!

Some and any both refer to an unspecified quantity, but they are used in different situations. Sigrid explains how they work.