Have you ever wondered why English seems to have roots in so many different languages? Here is a look at what words the Anglo-Saxons and Vikings brought to the English language.

Taylor Swift reflects back on the tour for her album 1989, which was attended by over two million fans. Featuring behind the scenes footage and performances of the song "New Romantics."

Steve Skaith of the English band Latin Quarter plays "The Spearcarrier." A "spear carrier" is a nickname for a character in a movie or play who appears only in the background, generally in a non-speaking role.

With the Rainforest Alliance certification, everyday purchases can help prevent deforestation and climate change, protect wildlife, alleviate poverty and transform business practices. Choose products with the seal of the green frog when purchasing coffee, cocoa, tea, flowers, fruit, paper, and wood products.

Taylor Swift discusses her song "Out of the Woods" and why it is representative of the goal she had for her album 1989.

American singer Christina Perri sings her hit "Jar of Hearts," a song about heartbreak. She is a rising star in the United States and ready to take on the world at large.

David and Ben Crystal explain what goes into original pronunciation (OP) productions of Shakespeare and what they reveal about the history of the English language.

Minidisco presents a song that reviews the names of the family members as well as the names of the different fingers! Enjoy!

Sigrid talks about some of the ways she learned how to speak Italian and French.

We all know that whales are endangered due to hunting and pollution, but do you know how important they are for the ocean and the environment? This video shows how essential a healthy population of whales is to the ocean ecosystem. Creative Commons Attribution license (reuse allowed). Video was not modified. Please visit sustainablehuman.org for credits and more information.

This performance of "Wonderful Tonight," one of Eric Clapton's later hits, features dynamic solos by Clapton and singer Katie Kissoon. Enjoy!

Learn about the states of matter, solids, liquids and gases, how they're different and where they're found in everyday life.

Taylor Swift's song "Wildest Dreams" was the fifth chart-topper from her album 1989. The music video, directed by Joseph Kahn, references classic Hollywood romances.

Over the course of human history, thousands of languages have developed from what was once a much smaller number. How did we end up with so many? And how do we keep track of them all? Alex Gendler explains how linguists group languages into language families, demonstrating how these linguistic trees give us crucial insights into the past.

Jimmy Fallon can't believe he's at the White House on the Fourth of July. Watch part of his stand-up performance from that evening in which he does impressions of ten other comedians!