In 1830, David Walker sewed a pamphlet into the lining of a coat. The volume was thin enough to be hidden, but its content was far from insubstantial. At the time, many members of the US government considered this pamphlet to be one of the most dangerous documents in American history. But what was this incendiary document? And who exactly was the man who wrote it?

Uncover the history of the hidden communities that inhabited the Great Dismal Swamp in North America.

Axolotls are one of science’s most studied animals. Why, you ask? These extraordinary salamanders are masters of regeneration: they can flawlessly regenerate body parts ranging from amputated limbs and crushed spines to parts of their eyes and brains. So, how do they do it? And what other secrets are they keeping? Luis Zambrano explores the baffling biology of the axolotl.

Three generations of women attempt to celebrate Mother's Day, but things go sour from the very start. This oddball family includes a crazy father, a domineering grandmother, whacky uncles, but it really gets going when a long time secret is revealed.

A variety series featuring a cast of animated characters mocking real-world events the same day that they happen, and even interviewing real-world guests and newsmakers...

Explore Dante Alighieri’s epic poem, “Divine Comedy,” a 3-part narrative that follows Dante’s journey for salvation through Hell.

Learn about the life and tragic death of gay rights pioneer Harvey Milk, California's first openly gay public official.

Edward Paulino details the 1937 Haitian Massacre.

What do fans of atmospheric post-punk music have in common with ancient barbarians? Not much ... so why are both known as “goths”? Is it a weird coincidence – or is there a deeper connection stretching across the centuries? Dan Adams investigates.

Imagine, for a second, a duck teaching a French class. A ping-pong match in orbit around a black hole. A dolphin balancing a pineapple. You probably haven’t actually seen any of these things. But you could imagine them instantly. How does your brain produce an image of something you’ve never seen? Andrey Vyshedskiy details the neuroscience of imagination.

An underground trivia legend in NYC lives in the shadows. He faces a mysterious unbeaten game show from his past when he battles his rival to reclaim the greatness he once had.

Sarah Rosenthal dives into the Abstract Expressionist movement in hopes of answering that question.

They’re cute, they’re lovable, and 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 science behind some of your cat’s strangest behaviors.

Bryan W. Van Norden reveals the man behind the mystery.

Michael Murillo gives the full picture on plasma.