This ancient mathematical trickery posits that a mighty hero cannot overtake a tortoise. Zeno of Elea (born c. 490 BCE) is the author of this and other paradoxes.

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.

The gravity of the situation is clear – and yes, it’s going to hurt. But what are a few broken bones when the alternative is plummeting to your doom? Lonely Planet, the largest travel guide book publisher in the world, suggests we learn to laugh in the face of adversity with their How to Survive Anything series, of which this video is an episode.

Sandra Bullock gives us the scoop on her new family friendly film "Minions" and gives her best Minion impression.

Released in 1968, the animated film "Yellow Submarine" was inspired by the music of the Beatles and featured them in person as well. The spirit of 1960s counterculture is well-represented in this trailer. Enjoy!

"Elephants Dream" is a short animated film, created by the Orange Movie Project in Amsterdam using almost entirely open-source software. Whether a dream, or hallucination, or reality – Emo is not sure what he thinks of the machine, which Proog practically worships, until he makes a serious mistake...

Did you know that the T-Rex dinosaur is closer to us in time than to its distant ancestor, the Stegosaurus? Watch this amazing video for the fastest history of the universe ever told!
This video has been a collaboration of KURZGESAGT & WAITBUTWHY!

Founded by writer Dave Eggers, the Brooklyn Superhero Supply Company is a sister project of the San Francisco Pirate Supply Company, both of them storefront covers for their real work, the 826 educational assistance program. See how creative minds have banded together to make learning fun and at the same time creatively fund educational assistance!

Time makes sense in small pieces. But when you look at huge stretches of time, it’s almost impossible to wrap your head around things. So KURZGESAGT teamed up with the awesome blog WAITBUTWHY and made this video to help you put things in perspective!

Learn about the role of the sea in global warming. The global conveyer belt is part of the large-scale ocean circulation that is driven by differences in the density of the ocean waters. It plays a key role in keeping the climate in balance and Europe warm. Global warming may change it forever with unforeseeable consequences.
Brought to you by Kurzgesagt - In a Nutshell.

During a foray over the fields, Frederick explains to his little piglet brother Piggledy what summer is.

Enjoy another walk through the fields with pig brothers Piggeldy and Frederick. This time Piggeldy wants to learn about “weeds.”

Enjoy another walk through the fields with pig brothers Piggeldy and Frederick. This time Piggeldy wants to know what a sheep is.

Piggeldy and his big brother Frederick are out and about again to discover more about the world. Today Piggeldy wants to know what a birthday is.

"Walking in a Winter Wonderland" is a beloved Christmas carol. Sing along to the merry lyrics that have been brought to life by Mini Disco.