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.

Bedrock, home of the famous cartoon caveman Fred Flintstone, is a very modern Stone Age city. There are newspapers, cars, televisions and telephones, even a system of airmail!

Fred Flintstone and his best friend Barney Rubble like to go bowling and play golf, but before they can relax and enjoy themselves, there are household chores to be done. Fortunately for them and their wives, Wilma and Betty, there have already been some fantastic new inventions to make Stone Age living that much easier.

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!

The English language has changed in many ways over the centuries, but the internet has changed it in just a few decades. Why use a whole sentence when an abbreviation will do?

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!

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.

This animated video shows how tuberculosis, still a very common disease, spreads and is fought by our bodies. Find out more about MSF’s work treating tuberculosis around the world.

The Tom and Jerry cartoon has been a classic since it first came out in 1940. America's favorite rivals now take their cat-and-mouse game to the big screen – coming to theaters in 2021.

The dwarves have long held great wealth, hidden in golden hordes. In verses of song, they tell their history of generations at work beneath the mountain who formed their gold, silver, and jewels into fine treasures and works of art.

The dwarves tell of the terrifying dragon, Smaug, his destruction of the human town of Dale, and how he drove them from their mountain, stealing their hoards of gold. Bilbo also learns the perilous nature of the adventure that awaits him.

The dwarves stumble across a group of trolls feasting on mutton. Instead of avoiding them, they send forward Bilbo, their “expert burglar," to steal the meat from under the trolls’ noses.

Bilbo and the dwarves come to Rivendell, where they are enchanted by elven music and hospitality, and discover magic runes that guide them on their quest. But, back on the road, a violent storm halts their progress, and as they shelter in a dark cave, goblins attack!”

Gollum eyes Bilbo as a juicy meal, but little does he know that the hobbit has found the one thing he prizes the most, his precious golden ring! Losing a battle of wits and then the ring, Gollum flies into a rage, and Bilbo discovers just in time that the ring has magic powers.