Here's a video from the World Wildlife Fund. Traditionally, anaerobic digester systems have not been practical on small dairy farms, but this didn’t stop Sensenig Dairy, a 100-cow farm, from pursuing its goal. Then Sensenig teamed up with the local community to collect enough waste to produce 1,401,600 kilowatt hours of electricity per year from "trash" that would otherwise end up in a landfill.

There's one more important question word to learn: "how." Sigrid provides plenty of examples of questions with "how," both by itself and together with an adjective or adverb.

In this video, we learn to ask and answer some simple and important questions with adjectives. We also see Lenny audition for an acting role by acting out various adjectives used to describe people. But it’s a tough task, and he struggles to impress.

California sea lion communication, mating habits, and past and present threats to their survival are discussed. This segment additionally features amazing aerial photography of their rocky coastal habitats.

The musical takes shape as Coldplay and the Game of Thrones cast continue to rehearse the songs. But just when they are ready to do their premier performance, there's a bit of a snag.

A fun and easy video where you get to learn the words you use to describe your family members and your relationship to them. A family tree helps in visualizing the connections.

World Wildlife Fund: Making sustainability a priority, the Marshik Dairy — a fifth-generation family farm — implemented a new, technologically advanced and energy efficient barn design for their 155 cows. The new design included robotic milking facilities, energy efficient lighting and ventilation, and renewable wind and solar power.

In this video, Austin shows budding guitarists an exercise to increase the accuracy and dexterity of their fingers as they move across the guitar frets. The chords appear relatively simple, but Austin assures us that it’s not as easy as he makes it look!

Sigrid uses the question words "who," "what," "when," "where," "why," and "how" as she thinks out loud about her next vacation. Where will she go? How will she get there? How much will it cost?

Lenny Kravitz started playing music at the age of three. Back then, he would play the drums on kitchen pots and pans. At this point, he’s been hailed amongst the coolest of rock and roll royalty for over thirty years. In this song, he takes the part of a night shift factory worker who just can’t wait to get out in the sun!

While windsurfing in South America as a 20-year-old, Justin James was attacked and severely injured by a tiger shark. His grandmother gave him a guitar for his convalescence and that's how he got his start in music. “Drinking Song” is a giddy celebration of partying through the night with friends and is featured on his Islands album.

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.

Neil receives a phone call from his mom, who wants to know everything about his new life. She asks about his job, his new apartment, and his neighbors. Most importantly, she wants to know that he’s happy, and to tell him that she and his dad are thinking about him a lot!

This ancient mathematical trickery posits that a mighty hero cannot overtake a tortoise. Zeno of Elea (born c. 490 BCE) is the author of this and other paradoxes.

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

Larry and Lisa are contestants on "What’s That Word?", a game show that will test their ability to name the opposite words to some common adjectives. Round one is competitive, and nobody leaves empty-handed… but who will get to participate in the bonus round and get a chance at a big cash prize?

Taylor Swift celebrates individuality with a catchy tune and a psychedelically colorful fantasy video. It’s a song that reminds us all that though nobody is perfect, everyone is unique and special in their own way, and that’s a great reason to feel good about ourselves!

Lauren shows us around Brick Lane in East London. Sights include a mosque, street art, and hopping nightclubs.

This power ballad version of a song written by Prince became Sinéad’s international breakthrough hit, topping music charts around the world. Her deep emotions are clear to see in this memorable video, as she explores feelings of love and loss.

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.

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.

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

Anne-Marie is a successful singer and songwriter, and she believes that all the hard work, discipline, and focus learned while becoming a black belt in karate has prepared her well for her busy life. She clearly loves her teacher Jo, and her sport, in which she has won gold medals at World Championship level.

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.