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.

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.

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.

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?

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.

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.

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!

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.

Let Sigrid tell you about the solar system that resolves around the Sun, including the order and characteristics of the planets within it. What is the closest planet to the Sun? What are the smallest and largest planets?

In this episode of SciShow Kids, Jessi talks about how solar eclipses occur, and why they can only be seen from certain locations.

The Magnus effect is the commonly observed deviation of the spinning ball from a linear flight path. Watch this video to find out why this occurs and what implications it has.

What happened when Expedition PROTECT and American Promise arrived at Jeffrey's Ledge, a marine protected area in the Gulf of Maine? The crew tells us about what they are doing and why.

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.

"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.

Alex Bellos tells us about a far superior method of cutting a cake using scientific principles.