We use question words plus words like "some" and "any" to form new indefinite words, such as "sometime," "sometimes," and "anytime." This video is about question words "who," "what," and "when."

The boys from the pop band The Vamps join Anne-Marie for a karate lesson. She takes them though a warm up, some kicking and punching, then a game and a sparring session that threatens to get out of control!

Dolphins are one of the smartest animal species on Earth. In fact, their encephalization quotient (their brain size compared to the average for their body size) is second only to humans. But exactly how smart are they? This video shares some incredible facts about dolphins.

The travel kids visit a town almost completely covered by volcanic rock some twenty years before. There’s not a great deal left of it for them to see! They walk out onto the glassy and slippery surface of the lava flow, where volcano expert Ken takes a sample of some liquid rock to measure the temperature. It’s super hot, and Julian makes the excellent decision to keep his hands well clear!

Are you tired of the usual methods? With Yabla, you can learn a new language through authentic videos that range from music to news to lessons. You can try the unique Yabla video player for free at yabla.com.

This video focuses on the verb "to be," with useful phrases for when you first meet people or are asked for your personal information. The second part of the video has an amusing skit, which may not be that funny if you're the sick person in the hospital emergency room.

Rhinoceroses, or rhinos for short, are the largest land animals after elephants. Five species remain (two in Africa and three in Asia) and all are endangered as a consequence of the illicit trade of their horns. The importance of rivers is another focus of this segment.

Mayim shares her doubts and misgivings about open relationships. It seems that for her, the commitment, predictability, and closeness of a monogamous relationship is all together more meaningful and enjoyable.

How do you feel? This beginner video will help you find the right adjective to describe how you're feeling.

In this beginner-level video, Luana teaches us about plants. She talks about the functions of the various parts of a plant, and offers tips on watering plants that grow indoors and outdoors.

These three words are so similar, but so different! Check out this lesson, too.

Actress, author, and neuroscientist Mayim Bialik considers open relationships. While she sees the benefits, there are certainly things she doesn’t “get” about this kind of arrangement, as she sees male and female biology clearly dictating different ideals.

The focus of this segment is on animals of the African savanna. We get to see giraffes and elephants, the largest of the land creatures, as well as cheetahs, the fastest.

Sigrid packs her carry-on bag for the flight to Paris. She talks about what she needs to pack, and why.

The video starts with information about coastal geology and the evolution of birds. It includes amazing footage of white storks, wildebeest, as well as zebras in East Africa's Serengeti region.