Teaching is both a science and an art, and many teachers around the world spend endless hours perfecting their professional practice. At TEDActive 2013, a few teachers from the United States offer some tricks of the trade they've learned (and continue to hone) along the way. Learn more about your ad choices. Visit megaphone.fm/adchoices
Dig into the science of how cancer cells grow, and why its rapid cell division is the disease’s strength— but also its weakness. -- How do cancer cells grow? How does chemotherapy fight cancer (and cause negative side effects)? The answers lie in cell division. George Zaidan explains how rapid cell division is cancer's "strength" -- and also its weakness. Lesson by George Zaidan, animation by TED-Ed. Support Our Non-Profit Mission ---------------------------------------------- Support us on Patr...
Trace the fall of the Ottoman Empire, which lasted nearly 600 years until their defeat in World War I as part of the Central Powers. -- Under cover of darkness in 1909, Sultan Abdulhamid II left Istanbul – bringing an end to his reign. For almost six centuries, his family had ruled the Ottoman Empire, spanning regions in North Africa, southeastern Europe, and the Middle East. But the end of this dynasty had been brewing for years. What happened to this once-powerful empire? Mostafa Minawi traces...
Explore the physics of how jetpacks fly, and discover the technology that allows pilots to maneuver the engines. -- In 1961, Yuri Gagarin piloted a spacecraft in humanity’s first manned space flight. A week later, Bell Aerosystems debuted a gas-powered rocket pack that could fly 35 meters in 13 seconds. Unfortunately, engineers knew this short flight was all the rocket pack could muster. So why was a massive spacecraft easier to send flying than a single pilot? Richard Browning investigates. Les...
View full lesson: http://ed.ted.com/lessons/what-makes-a-hero-matthew-winkler What trials unite not only Harry Potter or Frodo Baggins but many of literature's most interesting heroes? And what do ordinary people have in common with these literary heroes? Matthew Winkler takes us step-by-step through the crucial events that make or break a hero. Lesson by Matthew Winkler, animation by Kirill Yeretsky. Learn more about your ad choices. Visit megaphone.fm/adchoices...
Get to know the parasite known as the tongue-eating louse, which eats the tongue of a fish and then takes its place permanently. -- The infamous tongue-eating louse is one of nearly 400 species belonging to a family of fish parasites. Some latch onto their host’s head, others suck blood from fish gills, and others still burrow into fish flesh. But the Cymothoa exigua goes specifically for fish tongues. How do these parasites do it, and why? Niko Zlotnik explores the strategies tongue biters use ...
Teaching is both a science and an art, and many teachers around the world spend endless hours perfecting their professional practice. At TEDActive 2013, a few teachers from the United States offer some tricks of the trade they've learned (and continue to hone) along the way. Learn more about your ad choices. Visit megaphone.fm/adchoices
View full lesson: http://ed.ted.com/lessons/let-s-talk-about-sex-john-bohannon-and-black-label-movement What would you tell your younger self about sex if you could? (Starting with the big question: Why does it exist in the first place?) Mixing talk and dance, John Bohannon and Black Label Movement explore why sex exists -- and implore adults to talk honestly to the kids in their lives about the confusion and joy of human sexuality. Talk by John, dance by Black Label Movement, and music by Jello...
Dig into the strategies employed by sports betting apps to keep you gambling, and how these tactics can cause addictive behavior. -- Sports gambling has become more popular than ever. Mobile apps make it easier to place bets anywhere or anytime, especially for young people who make up the fastest-growing demographic. And the sports betting apps work just like the games in a casino— built to ensure that the house always wins. So, what exactly are the tricks these apps use? Shannon Odell shares wh...
View full lesson: http://ed.ted.com/lessons/aparna-rao-high-tech-art-with-a-sense-of-humor Artist and TED Fellow Aparna Rao reimagines the familiar in surprising, often humorous ways. With her collaborator Soren Pors, Rao creates high-tech art installations -- a typewriter that sends emails, a camera that tracks you through the room only to make you invisible on screen -- that put a playful spin on ordinary objects and interactions. Talk by Aparna Rao. Learn more about your ad choices. Visit meg...
Look into the financial and environmental costs of taking a private jet, and find out what can be done to reduce aviation emissions. -- Across 2023 and 2024, one internationally renowned musician flew their private jet 396 times in 365 days. Figures like this aren’t uncommon among the world’s richest jetsetters— in fact, this frequent flier probably isn’t even the celebrity you’re thinking of. So, what’s the price tag for this high flying lifestyle? Rachel Yang digs into the financial and enviro...
Download a free audiobook version of “Atlas of the Heart“ and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed -- One day, Echo was drifting through the woods and fell in love with a handsome young hunter named Narcissus. Cursed by Hera to only repeat the last words spoken by another, Echo was unable to converse with him and was soon cruelly rejected. Heartbroken, she died. Seeing this, the goddess Nemesis decided it was time for retribution. Iseult Gillespie details the myth o...
View full lesson: http://ed.ted.com/lessons/deb-roy-the-birth-of-a-word MIT researcher Deb Roy wanted to understand how his infant son learned language -- so he wired up his house with video cameras to catch every moment (with exceptions) of his son's life, then parsed 90,000 hours of home video to watch "gaaaa" slowly turn into "water." This astonishing, data-rich research has deep implications for how we learn. Talk by Deb Roy. Learn more about your ad choices. Visit megaphone.fm/adchoices...
Dig into what we know about Komodo dragons, and find out what you should do if you encounter these giant lizards in the wild. -- Clambering through the bush on one of Indonesia’s Lesser Sunda Islands, suddenly you spy a Komodo dragon in the clearing ahead. Forked tongue flickering; sharp, saw-like teeth glimmering; and strong, scaly body stretching up to 3 meters, Komodo dragons are formidable. So, what should you do? Are you doomed? Achmad Ariefiandy shares what we know about the world's larges...
Puzzle through an ethical dilemma and decide: what responsibility do we have to honor the wishes of the dead? -- For decades, Yvonne and Zaina have been happily married and co-leading a non-profit. One day the couple is involved in a car accident, and on her deathbed, Yvonne asks Zaina to promise her two things. First, to continue financially supporting their non-profit. And second, to never remarry. Should Zaina be beholden to these promises? Sarah Stroud and Michael Vazquez explore this ethica...
View full lesson: http://ed.ted.com/lessons/how-does-work-work-peter-bohacek The concepts of work and power help us unlock and understand many of the physical laws that govern our universe. In this Lesson, Peter Bohacek explores the interplay of each concept when applied to two common objects---a lightbulb and a grandfather clock. Lesson by Peter Bohacek, animation by Luke Cahill. Learn more about your ad choices. Visit megaphone.fm/adchoices...
Teaching is both a science and an art, and many teachers around the world spend endless hours perfecting their professional practice. At TEDActive 2013, a few teachers from the United States offer some tricks of the trade they've learned (and continue to hone) along the way. Learn more about your ad choices. Visit megaphone.fm/adchoices
Explore the possibility of transitioning to a green economy, and if the trillion-dollar up-front cost is worth the investment. -- Global warming is very, very expensive: extreme weather, rising sea levels, crop failures, health issues, and industry disruptions all cost money. So, what’s the best way forward? Is the estimated trillion-dollar price tag that comes with transitioning the world to clean energy worth the cost of investment? George Zaidan explores what it would take to become a green e...
View full lesson: http://ed.ted.com/lessons/dance-vs-powerpoint-a-modest-proposal-john-bohannon Use dancers instead of PowerPoint. That's science writer John Bohannon's "modest proposal." In this spellbinding choreographed talk he makes his case by example, aided by dancers from Black Label Movement. Talk by John Bohannon. Learn more about your ad choices. Visit megaphone.fm/adchoices...
Dig into how your age can affect your decision making, and explore the psychology of how we weigh risks against rewards. -- Welcome to Risky Business, the game where we find out how far people will go to win a prize! Today’s contestants are a 21 year-old, a 16 year-old, and a 12 year-old. They'll compete in a series of three challenges: eating ghost pepper cookies, swimming in honey, and crossing a balance beam over poison ivy. Who will win? Dan Kwartler takes a look at how people at different a...
View full lesson: http://ed.ted.com/lessons/how-did-english-evolve-kate-gardoqui What is the difference between "a hearty welcome" and "a cordial reception"? In a brief, action-packed history of the English language, Kate Gardoqui explains why these semantically equal phrases evoke such different images. Lesson by Kate Gardoqui, animation by Ben Tobitt. Learn more about your ad choices. Visit megaphone.fm/adchoices...
Get to know the story of Queen Liliʻuokalani, the last queen of Hawaii, and how she fought the US annexation of the islands. -- On January 16th, 1895, two men arrived at Liliʻuokalani’s door, arrested her, and imprisoned her. The Missionary Party had recently seized power and now confiscated her diaries, ransacked her house, and claimed her lands. Liliʻuokalani was Hawaii’s queen and she ruled through one of the most turbulent periods of its history. Sydney Iaukea shares how the ruler fought the...
Discover the origins of dragon legends, and find out how geological events could have inspired these stories in ancient civilizations. -- From the Chinese Loong to the Filipino Bakunawa, the Scottish Beithir and the Greek Hydra, dragons have inflamed imaginations for millennia. Their ubiquity across world mythology has led many scholars to ponder their possible origins. Could it be that tales of dragons were crafted to make sense of violent weather events? Timothy J. Burbery shares what geomytho...
View full lesson: http://ed.ted.com/lessons/dna-the-book-of-you-joe-hanson Your body is made of cells -- but how does a single cell know to become part of your nose, instead of your toes? The answer is in your body's instruction book: DNA. Joe Hanson compares DNA to a detailed manual for building a person out of cells -- with 46 chapters (chromosomes) and hundreds of thousands of pages covering every part of you. Lesson by Joe Hanson, animation by Nipun.Co Motion Craft. Learn more about your ad ...
Dig into the science of how psychedelic drugs affect your brain, and how they could be used for psychiatric treatment. -- In 1943, chemist Albert Hofmann accidentally exposed himself to a drug he derived from ergot fungus and recorded its unexpected, mind-altering effects. The drug, lysergic acid diethylamide— or LSD— was soon heralded for its psychiatric potential. But how do LSD and other psychedelic drugs affect the body? And can they actually be medicinal? Anees Bahji explores the science of...
View full lesson: http://ed.ted.com/lessons/kevin-slavin-how-algorithms-shape-our-world Kevin Slavin argues that we're living in a world designed for -- and increasingly controlled by -- algorithms. In this riveting talk from TEDGlobal, he shows how these complex computer programs determine espionage tactics, stock prices, movie scripts, and architecture. Slavin also warns that we are writing code we can't understand with implications we can't control. Talk by Kevin Slavin. Learn more about your...
Teaching is both a science and an art, and many teachers around the world spend endless hours perfecting their professional practice. At TEDActive 2013, a few teachers from the United States offer some tricks of the trade they've learned (and continue to hone) along the way. Learn more about your ad choices. Visit megaphone.fm/adchoices
Explore 4 common misconceptions about Ancient Rome, and find out what living in this time period was actually like. -- Minerva, the esteemed Roman goddess of reason, wisdom, handicrafts, and war, is judging a contest: duo vera et mendacium. Three brave contestants will put their knowledge about ancient Rome to the test. How much of what they know about the time period is actually true? And which contestant will come out on top? Stephanie Honchell Smith debunks four common misconceptions about An...
View full lesson: http://ed.ted.com/lessons/margaret-wertheim-the-beautiful-math-of-coral Science writer Margaret Wertheim re-creates the creatures of the coral reefs using a technique invented by a mathematician -- simultaneously celebrating the amazements of the reef and deep-diving into the hyperbolic underpinnings of coral creation. Talk by Margaret Wertheim. Learn more about your ad choices. Visit megaphone.fm/adchoices...
Explore the construction of California’s Golden Gate Bridge, and dig into the engineering innovations that made the structure possible. -- Stretching 227 meters tall, two towers were assembled to support California’s Golden Gate Bridge. They were just one of the challenges facing engineers Charles Ellis and Joseph Strauss. Even before construction began, many thought the project impossible: the strait was home to powerful winds, constant fog, and earthquakes. So how was this iconic bridge create...
