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

Australian singer/songwriter Vance Joy performs his love song "Riptide" off his debut album. Enjoy!

Here is American hard rock band Van Halen performing their most successful single to date, "Jump" from their album 1984.

Watch this video for "Dance The Night Away," the first top 20 hit of the American rock group Van Halen.

Department of Homeland Security: This video will help you understand US-VISIT, the layer of security that uses biometrics, such as digital fingerprints, to establish and verify international travelers' identities. US-VISIT procedures apply to international travelers holding a non-U.S. passport or visa.

Voters in New York City talk about what they fear in a Trump presidency.

George Evageliou of Urban Homecraft shows us a dresser he made that’s inspired by traditional Shaker furniture designs.

There is a lot of talk about how 3D printing could revolutionize the way that we make stuff. But what is 3D printing and how does 3D printing allow us to make almost anything from nothing? Professor Tim Minshall, Head of the Institute for Manufacturing at the University of Cambridge, explains it in this video, which is targeted at school-age students.

The University of Cambridge is one of England's greatest universities. There's no main campus – instead, the university's many colleges are scattered throughout the charming town center. Many colleges welcome the public to browse around.

Shakira, singer and UNICEF Goodwill Ambassador, performs at the opening ceremony of the Sustainable Development Goals Summit at the General Assembly of the United Nations, 70th session.

UNICEF Goodwill Ambassador Katy Perry delivers a special weather report on the devastating effects of climate change for the world’s children.

Uma Thurman talks about who the real star of Quentin Tarantino's "Kill Bill" series is, and how it is difficult to have a critical opinion about a project on which you have work so hard for so long.

The Ultimate player's days of losing discs and sitting on the wet grass are over. The Hucket provides 6 gallons of room to transport discs, cleats, and jerseys for hectic weekend tournaments and is topped with a padded seat for any downtime. The video was produced for a kickstarter funding campaign.

English reggae and pop band UB40 were at the peak of their fame in the nineteen eighties, and they continue to make music and tour. They collaborated with new reggae band KIOKO for this single, which was featured on their album Bigga Baggariddim.

The official video of “The Sweetest Thing” by the Irish rock band U2.