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
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: 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: Intermediate
USA
Romantic chemistry is all about warm, gooey feelings that gush from the deepest depths of the heart... right? Not quite. Actually, the real boss behind attraction is your brain, which runs through a very quick, very complex series of calculations when assessing a potential partner. Dawn Maslar explores how our five senses contribute to this mating game, citing some pretty wild studies along the way.
Difficulty: Intermediate
Pakistan, United Kingdom
In the first of a new TED-Ed series designed to catalyze curiosity, TED Curator Chris Anderson shares his boyhood obsession with quirky questions that seem to have no answers.
Difficulty: Intermediate
India, Pakistan, United Kingdom
Physicists, philosophers, and UFO enthusiasts all have ideas on how many universes there may be or if there is extraterrestrial life. Chris Anderson summarizes the theories and expects that in the coming years physicists will arrive at more answers.
Difficulty: Intermediate
India, Pakistan, United Kingdom
Who knows when we'll discover whether we are alone in the universe or not? Whatever the answer, the quest for more knowledge will never cease, nor grow dull.
Difficulty: Intermediate
USA
Michael Jordan’s legendary slam dunk from the free throw line has been calculated at 0.92 seconds of pure hang time. But how many seconds could Jordan have gotten if he did the same jump on Mars? Or Jupiter?
Difficulty: Intermediate
USA
Dolphins are one of the smartest animal species on Earth. In fact, their encephalization quotient (their brain size compared to the average for their body size) is second only to humans. But exactly how smart are they? This video shares some incredible facts about dolphins.
Difficulty: Intermediate
USA
Judging by the 26 billion views on over 2 million YouTube videos of them, one thing is certain: cats are very entertaining. But their strange feline behaviors, both amusing and baffling, leave many of us asking: Why do cats do that? Tony Buffington explains the evolutionary history behind some of your cat’s strangest behaviors.
Difficulty: Intermediate
USA South
Destin Sandlin, an Alabama engineer and YouTube star, shows us how very difficult it is to learn to ride a backwards bike. You think it's going to be a piece of cake, but it's not!
Difficulty: Intermediate
Australia, Canada, USA
While it took Destin eight months to learn how to ride a backwards bike, his young son learned how in two weeks. The son's reward was a trip to Australia, where he got to meet Canadian astronaut Chris Hadfield.
Difficulty: Intermediate
USA
In this episode of SciShow Kids, Jessi talks about how solar eclipses occur, and why they can only be seen from certain locations.
Difficulty: Intermediate
USA
Allergist Jonathan Bayuk, MD, ACAAI member, discusses the importance of deep breathing and getting up and moving if you have a respiratory infection like COVID-19.
Difficulty: Intermediate
USA
"Help us to complete development of the Ocean Energy Turbine designed to replace Fossil Fuel and Nuclear Energy Dependence." Back this project and make the world a better place.
Difficulty: Intermediate
United Kingdom
Alex Bellos tells us about a far superior method of cutting a cake using scientific principles.
Difficulty: Intermediate
Australia, United Kingdom
You might have thought that “rock, paper, scissors” was a game of sheer chance, but scientists have shown that people play with a “predictable irrationality,” and that there are strategies that can help you to win.
Difficulty: Intermediate
United Kingdom
Fascinating footage, our journey begins in Alaska's Katmai National Park, both inhospitable and beautiful. We observe brown bears as they hunt salmon, track the rare glacier bear, and then continue south to British Columbia on our hunt for the rare Kermode bear, also called ghost bear or spirit bear.
Difficulty: Intermediate
Germany
Our journey begins in Alaska's Katmai National Park, both inhospitable and beautiful. We observe brown bears as they hunt salmon, we track the rare glacier bear, and then we continue south to British Columbia on our hunt for the rare Kermode bear, also called ghost bear or spirit bear.
Difficulty: Intermediate
United Kingdom
More stunning footage from Alaska shows, up close and personal, the brown bears in action - hunting for salmon and caring for their young. Enjoy!
Difficulty: Intermediate
United Kingdom
Observe more stunning footage from Alaska of the bald eagle and the black bear. And finally catch a first glimpse of the rare glacier bear. Enjoy!
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