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Can You Solve the Troll’s Paradox Riddle? – Dan Finkel (Transcript)

TED-Ed Video Lesson Transcript:  You’ve discovered a doorway to another realm, and now you and your brother are off exploring the wonderful world of Paradoxica. Fantastically paradoxical creatures crawl, run, and fly around you. And then you see the troll. It’s catching all the creatures in an enormous net. You bravely step forward and demand …

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Can Animals Be Deceptive? – Eldridge Adams (Transcript)

TED-Ed Video Lesson Transcript:  A male firefly glows above a field on a summer’s night, emitting a series of enticing flashes. He hopes a nearby female will respond with her own lightshow and mate with him. Sadly for this male, it won’t turn out quite the way he plans. A female from a different species …

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From Slave to Rebel Gladiator: The Life of Spartacus – Fiona Radford (Transcript)

TED-Ed Video Lesson Transcript:  As the warrior slept, a snake coiled around his face. Instead of a threat, his wife saw an omen – a fearsome power that would lead her husband to either glory or doom. For now, however, he was only a slave – one of millions taken from the territories conquered by …

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A Brie(f) History of Cheese: Paul Kindstedt (Transcript)

TED-Ed Video Lesson Transcript:  Before empires and royalty, before pottery and writing, before metal tools and weapons – there was cheese. As early as 8000 BCE, the earliest Neolithic farmers living in the Fertile Crescent began a legacy of cheesemaking almost as old as civilization itself. The rise of agriculture led to domesticated sheep and …

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Inside the Killer Whale Matriarchy: Darren Croft (Transcript)

TED-Ed Video Lesson Transcript:  Off the rugged coast of the pacific northwest, pods of killer whales inhabit the frigid waters. Each family is able to survive here thanks mainly to one member, its most knowledgeable hunter: the grandmother. These matriarchs can live 80 years or more, while most males die off in their thirties. Though …

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Why Should You Read Kurt Vonnegut? – Mia Nacamulli (Transcript)

TED-Ed Video Lesson Transcript:  Billy Pilgrim can’t sleep because he knows aliens will arrive to abduct him in one hour. He knows the aliens are coming because he has become “unstuck” in time, causing him to experience events out of chronological order. Over the course of Kurt Vonnegut’s Slaughterhouse Five, he hops back and forth …

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Can You Solve the Secret Werewolf Riddle? – Dan Finkel (Transcript)

TED-Ed Video Lesson Transcript:  You’re on the trail of a werewolf that’s been terrorizing your town. After months of detective work, you’ve narrowed your suspects to one of five people: the mayor, the tailor, the baker, the grocer, or the carpenter. You’ve invited them to dinner with a simple plan: you’ll slip a square of …

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Is Fire a Solid, a Liquid, or a Gas? – Elizabeth Cox (Transcript)

TED-Ed Video Lesson Transcript:  Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could stare at the bright flames forever as they twist and flicker in endless incarnations. But what exactly are you …

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Can You Solve the Killer Robo-Ants Riddle? – Dan Finkel (Transcript)

TED-Ed Video Lesson Transcript:  The good news is that your experimental robo-ants are a success! The bad news is that you accidentally just gave them the ability to shoot deadly lasers… and you can’t turn it off. You have five minutes to stop them before the lasers go online. Until then, all of your robo-ants …

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Can You Solve the Alien Probe Riddle? – Dan Finkel (Transcript)

TED-Ed Video Lesson Transcript:  The discovery of an alien monolith on planet RH-1729 has scientists across the world racing to unlock its mysteries. Your engineering team has developed an elegant probe to study it. The probe is a collection of 27 cube modules capable of running all the scientific tests necessary to analyze the monolith. …

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What’s a Smartphone Made Of? – Kim Preshoff (Transcript)

TED-Ed Video Lesson Transcript:  As of 2018, there are around 25 billion smartphone users in the world. If we broke open all their newest phones, which are just a fraction of the total that’ve been built, and split them into their component parts, that would produce around 85,000 kilograms of gold, 875,000 of silver, and …

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How Do Cigarettes Affect the Body? – Krishna Sudhir (Transcript)

TED-Ed Video Lesson:  Cigarettes aren’t good for us. That’s hardly news — we’ve known about the dangers of smoking for decades. But how exactly do cigarettes harm us? Let’s look at what happens as their ingredients make their way through our bodies, and how we benefit physically when we finally give up smoking. With each …

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