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?

Fracking is a controversial topic. This animated video tries to take a neutral look at fracking. It is relevant for all of us, because of high prices for energy and the danger to our drinking water.

The narrator explains how the breathtaking rock formations of Antelope Canyon came to be, and why mountains around the world can provide a metaphor for human existence.

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.

Why are some rock formations and animals found on more than one continent? The explanation dates back to the Ice Age.

Why do some of the national parks in the United States resemble the European Alps? Geologist Dr. Robert Darga answers this question.

Have you ever wondered what an escalator looks like on the inside, or how it works? Here's a brief demonstration.

They can flow like a liquid and bounce back like a solid. Masses of fire ants show a duality that intrigues physicists.

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.

Young black bears need to be careful when encountering the North American porcupine. Enjoy more footage from Alaska and Princess Royal Island in British Columbia, where young raccoons are also out and about.

We’ve all seen footage of the first men walking on the moon... but how exactly did they get there? This video details the fascinating, many-faceted construction of the Apollo 11 spacecraft so that we can see exactly what happened in what order to make this incredible journey a reality.

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?

After a seven-month journey, NASA’s Perseverance Rover successfully touched down on Mars on February 18, 2021. In this video, mission controllers at NASA's Jet Propulsion Laboratory in California celebrate landing NASA's fifth rover on Mars.

John Searle's thought experiment, called "The Chinese Room," presents an argument against the idea that computers could ever be truly intelligent.

The more you think about it, the more complex time travel seems! This video explains a key paradox that is one of the main reasons for this.