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Welcome to the strange, deviously difficult and incredibly joyful world of puzzle hunts. Follow along as Alex...

Fifty years of armed conflict in Colombia has left the countryside riddled with land mines that maim and kill innocent people who happen across them. To help keep communities safe from harm, TED Resident Carlos Bautista is developing an...

Since you're on YouTube, you probably know what a meme is; but what is it really and how does it go viral?

Do you often lose things like your keys? Psychology can explain not only why it happens, but also some ways to combat that.

Every minute, 20 people are newly displaced by climate change, economic crisis and political instability, according to the UNHCR. How can we help them overcome the barriers to starting new lives? TED Resident Muhammed Idris is leading a...

Beau Lotto's color games puzzle your vision, but they also spotlight what you can't normally see: how your brain works. This fun, first-hand look at your own versatile sense of sight reveals how evolution tints your perception of what's...

Are we born to be optimistic, rather than realistic? Tali Sharot shares new research that suggests our brains are wired to look on the bright side -- and how that can be both dangerous and beneficial.

From deep in the TED archive, Danny Hillis outlines an intriguing theory of how and why technological change seems to be accelerating, by linking it to the very evolution of life itself. The presentation techniques he uses may look...

In the uS, the press has a right to publish secret information the public needs to know, protected by the First Amendment. Government surveillance has made it increasingly more dangerous for whistleblowers, the source of virtually every...

In a talk that's part history lesson, part love letter to graphics, information designer Tommy McCall traces the centuries-long evolution of charts and diagrams -- and shows how complex data can be sculpted into beautiful shapes....

There's another theory about the Covid-19 pandemic going around, and while it is pretty cool, it's not exactly the solution some are suggesting it might be.

AI can do some pretty amazing things, but if we want it to learn on its own, we're going to have to teach AI how to evolve.

Clay Shirky looks at "cognitive surplus" -- the shared, online work we do with our spare brain cycles. While we're busy editing Wikipedia, posting to Ushahidi (and yes, making LOLcats), we're building a better, more cooperative world.

Taylor series are extremely useful in engineering and math, but what are they? This video shows why they're useful, and how to make sense of the formula.

Susan Blackmore studies memes: ideas that replicate themselves from brain to brain like a virus. She makes a bold new argument: Humanity has spawned a new kind of meme, the teme, which spreads itself via technology -- and invents ways to...

In this prophetic 2003 talk -- just days before Dolly the sheep was stuffed -- biotech ethicist Gregory Stock looked forward to new, more meaningful (and controversial) technologies, like customizable babies, whose adoption might drive...

What's stopping the American government from recording your phone calls, reading your emails and monitoring your location? Very little, says surveillance and cybersecurity counsel Jennifer Granick. The government collects all kinds of...

In the 1970s, astronomers Carl Sagan and Frank Drake developed the first messages intentionally sent out of our solar system. But how do you describe yourself to beings who have no concept of life on Earth?

Hank talks with University of Montana Professor Rick Hughes about innovating technology and training the SciShow staff. Special guest appearance with Jessi and Veiled Chameleon 'Twirly'.

We don't have to live in a world where 99 percent of rapists get away with it, says TED Fellow Jessica Ladd. With Callisto, a new platform for college students to confidentially report sexual assault, Ladd is helping survivors get the...

SciShow Talk Show: where Hank talks to interesting people about interesting things! In this episode Hank and Collections Manager Kallie Moore talk ancient life, careers in science, and dragons.

The line between public and private has blurred in the past decade, both online and in real life, and Alessandro Acquisti is here to explain what this means and why it matters. In this thought-provoking, slightly chilling talk, he shares...

If you're old enough to drink, you may have had a few too many cocktails and suddenly everything is spinning. Strange as it might seem, that’s not because the alcohol you drank is messing with your brain! So what causes the spins?

The people behind fake posts can rely on a few tricks to get you on board. But there are ways to spot them, and ways to avoid falling for what they have to say.