Laina "Walker" Morris created this video for a contest held by Justin Beiber to create a "Girlfriend" song in response to his popular song "Boyfriend." When posted to youtube on June 6, 2012, it quickly became a hit through social media.

Join Karine as she goes behind the scenes at the University of Oxford, one of the world’s oldest and most prestigious educational institutions and alma mater to kings and presidents.

In this video, you can learn all about Oxford, England, a beautiful university town steeped in history. There are many places of interest spread among the many colleges that comprise the university.

"High Hopes" is a single from Panic! at the Disco's sixth studio album Pray for the Wicked. Its hopeful message is expressed with crisp, soaring vocals and a punchy horn section.

“Into the Unknown” was a hit song from the movie Frozen 2, in which Elsa has to overcome her doubt in order to track down the source of a mysterious voice she keeps hearing. This version played as the movie’s end credits rolled, and was performed by the American rock band Panic! At The Disco.

Meet Ron Swanson, director of the Parks and Recreation Department in the fictional, mid-sized city of Pawnee, Indiana, USA, and April, his new assistant. April was not hired for her good record, enthusiasm, or potential as an employee, but rather because she promises to help Ron avoid people.

After April quits her job at the Parks and Recreation department, Ron comes to her family's house to encourage her to return. Ron hints that he knows about April's crush on Andy, and it is revealed that she knows some things about him as well.

April is back in the office and helping Ron avoid the citizens of Pawnee. He’s less happy, however, when she explains how he’s being tracked by online cookies, and that his privacy has been invaded on Google Earth.

Ron and April find everything they need on a shopping trip to “Food and Stuff." Back in the office, April is less than impressed when Ron uses fishing as a metaphor in order to impart relationship advice.

April senses that something is not right and returns to the office to find Ron alone and unable to leave his office.

Chris Pratt and Aubrey Plaza talk about their roles from the hit TV series Parks and Recreation. Their characters Andy and April became a couple in the second season of the show, but early on it was unclear if they would have the necessary chemistry.

As the series draws to an end, the young actors reflect on their onscreen relationship, and how their characters have matured. Chris Pratt makes it clear that this time in their lives has been tremendous fun, but also a deeply formative and moving experience.

Here's a quick summary of the different kinds of words we have in the English language and what they are used for.

Nouns are usually the first words we learn. The good news is that with nouns, we don't have to worry about gender in English. We do, however, have to be aware of gerunds that act like nouns but look like verbs, and countable or uncountable nouns.

Sigrid reviews the subject pronouns "I," "you," "he," "she," "it," "we," "you," and "they."