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.

In this video each member of the Irish rock band U2 talks about his favorite song that they’ve recorded together. To U2 fans out there, see them here, up close and personal and enjoy!

"Sunday Bloody Sunday" is a song by the Irish rock band U2 that was written as a response to events related to conflict in Northern Ireland at the time. It is considered one of their signature songs, and is one of the band's most performed tracks.

One of Irish band U2's most famous songs, "Pride (In the Name of Love)" was released on the album The Unforgettable Fire. In the lyrics, singer Bono reflects on the Civil Rights Movement in the United States.

U2 singer Bono's vocal talent is showcased in this breathtaking performance of "Every Breaking Wave" at the MTV Europe Music Awards 2014.

Written about the Polish Solidarity movement, this song is also a great listen for the new year. It's a song that U2 often performs in concert and has been chosen by both Rolling Stone and Pitchfork as one of the greatest five hundred songs of all time.

Listen to U2's “You're the Best Thing about Me.” Rolling Stone magazine defines the song as “a joyous ear-worm about romantic dissatisfaction.” The video is set in New York City. The opening and closing lines of the video come from “The New Colossus” by Emma Lazarus, a sonnet written to raise funds for the Statue of Liberty's pedestal.

U2 are the biggest Irish rock band ever and this one of their greatest hits. It's a song of earnest doubt and heartfelt yearning that reminds us that we are all human and all searching for some meaning in our lives.