Difficulty: Beginner
USA
They can flow like a liquid and bounce back like a solid. Masses of fire ants show a duality that intrigues physicists.
Difficulty: Intermediate
USA
You've made it to the final round of a game show, and get to pick between 3 doors, one of which has a car behind it! You make your choice, and then the host decides to show you one of the wrong answers. He then offers you the opportunity to change your choice. Should you do it? Find out just how wrong human intuition can be in this classic Monty Hall Problem.
Difficulty: Intermediate
USA
The trailer for the Marx Brothers’ fourth film Horse Feathers.
Difficulty: Intermediate
United Kingdom
Imagine having the chance to make the stars of stage and screen look perfect, and come face to face with the Royal family, every day. Watch and share Rebecca's London story as the colouring artist at Madame Tussauds London shares some of the behind the scenes secrets of her role, the traditional techniques used to create the ever-changing wax figures on show and the places she loves in London when she's not rubbing shoulders with the rich and famous.
Difficulty: Intermediate
United Kingdom London
Meet Barney, one of the Yeoman Warders of The Tower of London, known as Beefeaters, who lives and works at the royal palace. Watch and share his legendary London story. From his passion for making sure ravens stay at The Tower and pride in carrying out one of the oldest traditional ceremonies in history, Barney explains why he passionately believes London is the greatest city on earth.
Difficulty: Intermediate
United Kingdom
Do you know your Turner from your Warhol? If not, don't worry, London is the perfect place to explore the art world through its wealth of museums. Watch and share Marcus's London story and let him take you on a journey of discovery. This Tate Modern curator is just one of the passionate staff waiting to introduce you to the people and ideas housed within the walls of the imposing former power station. Directly opposite St Paul's Cathedral across the Millennium Bridge, Tate Modern sits on the South Bank among one of the most vibrant new parts of the city.
Difficulty: Beginner
USA
Why do some of the national parks in the United States resemble the European Alps? Geologist Dr. Robert Darga answers this question.
Difficulty: Beginner
Germany, USA
Why are some rock formations and animals found on more than one continent? The explanation dates back to the Ice Age.
Difficulty: Intermediate
USA
In Yellowstone Park, visitors can see many indigenous animals in their natural habitat and wonder at the park's natural hot springs.
Difficulty: Intermediate
USA
Geysers represent a very popular tourist attraction in Yellowstone Park. How do they work and where do they come from? And what is sandstone? The video answers these questions.
Difficulty: Adv-Intermediate
USA
In this segment, we learn about the role weather plays in the creation of rock formations in the national parks of the United States.
Difficulty: Intermediate
USA
We learn more about how water interacts with the minerals in the rocks, and visit Monument Valley, a popular spot for filming westerns and commercials.
Difficulty: Intermediate
USA
The Colorado Plateau and the Grand Canyon are just a few of the amazing geographical features of the Southwestern United States.
Difficulty: Intermediate
USA
We visit Bryce Canyon, where valuable fossils have helped understand the geological history of the planet. The sandstone spires of the canyon are breathtaking.
Difficulty: Beginner
USA
In this segment, the narrator explains where the name Bryce Canyon came from, and why the sand dunes in the US and the large deserts of the world might be related.
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