Even science can't yet explain these 7 extremely cool, weird phenomena in the universe, despite decades or even centuries of research.

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It doesn’t make much sense when we try to hide our good deeds, even though we know that we would get rewards from doing something good. Scientists are trying to solve this our bizarre behavior by using game theory.

Tim Brown says the design profession has a bigger role to play than just creating nifty, fashionable little objects. He calls for a shift to local, collaborative, participatory "design thinking" -- starting with the example of...

What's so special about Leonard da Vinci's Vitruvian Man? With arms outstretched, the man fills the irreconcilable spaces of a circle and a square -- symbolizing the Renaissance-era belief in the mutable nature of humankind. James Earle...

(NOTE: Statements in this talk have been challenged by scientists working in this field. Read "Criticisms & updates" below for more details.) Elaine Morgan was a tenacious proponent of a theory that is not widely accepted. The aquatic...

The idea that a collection of pixels can be sold for actual money might be confusing to some, as they are neither true "objects" you can hold nor "ideas" that can be considered intellectual property. But despite the lack of tangibility,...

The traditional model of our mental function is that first our senses provide data to our brain, which then translates those senses into the appropriate mental phenomena: light into visual images, air vibrations into auditory...

In which John Green teaches you about the Gilded Age and its politics. What, you may ask, is the Gilded Age? The term comes from a book by Mark Twain and Charles Dudley Warner titled, "The Gilded Age." You may see a pattern...

Figuring out exactly what consciousness is and whether or not it could emerge in non-human things has stumped us for centuries. Now, analyzing it from a scientific perspective might not just be possible, but necessary.

You might have heard about repressed memories on TV, but those memories aren’t always what they seem. <br/>
*Content Warning: description of school shooting

Today Hank gains insight from that most philosophical of figures...Leonardo DiCaprio. In this episode, we’re talking about the process of philosophical discovery and questioning the relationship between appearance and reality by taking a...

Perpetual motion machines - devices that can do work indefinitely without any external energy source - have captured many inventors' imaginations because they could totally transform our relationship with energy. There's just one...

Learn about the Greek physician and philosopher Galen of Pergamon, whose experiments and discoveries changed medicine. -- In the 16th century, an anatomist named Andreas Vesalius made a shocking discovery: the most famous human anatomy...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. From our fear of women's bodies to our sheepishness around the word "nipple," our ideas about sex need an upgrade,...

There’s a lot we just don’t know about death, but even among the things we think we do know, there are a lot of misconceptions. Here are 5 weird things we believe about death!

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The clash of ideas is fundamental to creativity and progress, but it can also be deeply destructive and create divisions within companies, communities and families. How do you foster productive debate while protecting against harmful...

This week, John i s talking about one of his least favorite novels, The Lord of the Flies by William Golding. Lord of the Flies is a novel of ideas, and John doesn't agree with the central idea of the novel, which diminished his...

Scientists can’t directly observe dark matter, and they still don’t know what it is… so why are they so confident it exists?

In this ode to design renegades, Alice Rawsthorn highlights the work of unlikely heroes, from Blackbeard to Florence Nightingale. Drawing a line from these bold thinkers to some early modern visionaries like Buckminster Fuller, Rawsthorn...

Long before we had rocket scientists, the idea of spaceflight traveled from mind to mind across generations. With great visuals, TED Fellow and NASA economist Alexander MacDonald shows how 300 years of sci-fi tales -- from Edgar Allan...

Coding isn't just for computer whizzes, says Mitch Resnick of MIT Media Lab -- it's for everyone. In a fun, demo-filled talk Resnick outlines the benefits of teaching kids to code, so they can do more than just use new tech toys but also...

You might assume that the animated TV series "My Little Pony: Friendship Is Magic" is for little girls, but Bronies - adult men who sincerely LOVE the show, and aren't afraid to admit it - would differ. Many people are baffled, even...

The temperature drops and you're more likely to get a cold: Is this correlation or causation?

Le grand pouvoir des petits dessins



Les dessins sont un langage universel que tout le monde peut comprendre, affirme dessinateur connu sous le nom de "Aster". Joignez Aster pendant qu'il nous démontre comment les...