At the University of Sydney, physicist Derek Muller explores the possibility of an anti-gravity wheel through a series of field tests.

Why, sung by Sabrina Carpenter in an "electropop" style, is all about contrasts. A conversation in a restaurant between Sabrina and her boyfriend sets the stage for a song about all their differences and how, for some mysterious reason, they still get along fine.

Like the letter "M," "N" is almost singable. Sigrid gives you some tips about some very important words containing the letter "N."

Laid back American folk-rock musician Jack Johnson appears in the video to his hit recording “I Got You”. It’s off the album “From Here To Now To You”. Enjoy!

Here's a concise and comical history of rugby, the game invented in 1823 and named after the Rugby School, a boarding school in Warkwickshire, England.

Esperanza Spalding, the first jazz musician to ever win a Grammy award, covers Lauryn Hill's song “Tell Him.” The song is loosely inspired by the famous Bible passage about "faith, hope, and love" from First Corinthians chapter 13.

Here is a live performance of American singer songwriter Jack Johnson singing his hit song "Taylor". Enjoy!

This is the second film adaptation of William Golding's Lord of the Flies, published in 1953. The opening scenes show the arrival of 24 military school boys on a deserted island in the Pacific, after their airplane has crashed into the ocean.

The letter "O" is a tricky vowel, because there are several ways to pronounce it, both when it's single and when it's double!

As writer and tour guide Susie Millar tells us about some of Northern Ireland's attractions, such as the Titanic museum and the incredibly beautiful Causeway Coastline, you won't want to wait any longer to buy a ticket for Belfast.

Katie Melua sings "Where Does the Ocean Go?" It is a single from Ketevan, her sixth studio album. In the video, as she sings, a painter-seaman paints the ocean. The song was inspired by Samuel Taylor Coleridge’s The Rime of the Ancient Mariner.

Take a look at London's most popular attractions based on visitor numbers. From museums to family-friendly attractions and World Heritage Sites, London has something for everyone. The Parthenon marbles, the Crown Jewels, and the Cutty Sark clipper ship are among London's must sees. A great thing about London is that so many museums have free admission.

"What Christmas Means to Me" was written by Allen Story, Anna Gordy Gaye, and George Gordy. It has been recorded by many artists, and here is a very catchy version performed by Cee Lo Green on his album Cee Lo's Magic Moment.

Annette explains three more colloquial contractions people use in everyday conversation: gotta [got to], gotcha [got you], and dunno [don't know]. She also gives us examples in context.

Harry Edward Styles is a young English singer, songwriter, and actor. He rose to stardom as a member of the boy band "One Direction." "Kiwi" is a particularly personal and explicit song, possibly about an ex-girlfriend, who might have been from New Zealand, since "Kiwi" is slang for "New Zealander."