TED-Ed

View full lesson: http://ed.ted.com/lessons/a-different-way-to-visualize-rhythm-john-varneyUploaded 20-10-14In standard notation, rhythm is indicated on a musical bar line. But there are other ways to visualize rhythm that can be more intuitive. John Varney describes the ‘wheel method’ of tracing rhythm and uses it to take us on a musical journey around the world. Lesson by John Varney, animation...

Check out our Patreon page: https://www.patreon.com/tededUploaded 01-11-18View full lesson: https://ed.ted.com/lessons/what-causes-heartburn-rusha-modiHumans have been battling heartburn for hundreds, if not thousands, of years. But recently the incidence has risen, making it a common complaint worldwide. What causes this problem, and how can it be stopped? Rusha Modi details the causes and treatm...

View full lesson: http://ed.ted.com/lessons/einstein-s-brilliant-mistake-entangled-states-chad-orzelUploaded 16-10-14When you think about Einstein and physics, E=mc^2 is probably the first thing that comes to mind. But one of his greatest contributions to the field actually came in the form of an odd philosophical footnote in a 1935 paper he co-wrote -- which ended up being wrong. Chad Orzel detai...

Check out our Patreon page: https://www.patreon.com/tededUploaded 05-11-18View full lesson: https://ed.ted.com/lessons/is-fire-a-solid-a-liquid-or-a-gas-elizabeth-coxSitting 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...

View full lesson: http://ed.ted.com/lessons/schrodinger-s-cat-a-thought-experiment-in-quantum-mechanics-chad-orzelUploaded 14-10-14Austrian physicist Erwin Schrödinger, one of the founders of quantum mechanics, posed this famous question: If you put a cat in a sealed box with a device that has a 50% chance of killing the cat in the next hour, what will be the state of the cat when that time is up?...

Check out our Patreon page: https://www.patreon.com/tededUploaded 06-11-18View full lesson: https://ed.ted.com/lessons/how-far-would-you-have-to-go-to-escape-gravity-rene-lauferEvery star, black hole, human being, smartphone and atom are all constantly pulling on each other due to one force: gravity. So why don’t we feel pulled in billions of different directions? And is there anywhere in the univ...

View full lesson: http://ed.ted.com/lessons/history-vs-christopher-columbus-alex-gendlerUploaded 13-10-14Many people in the United States and Latin America have grown up celebrating the anniversary of Christopher Columbus’s voyage. But was he an intrepid explorer who brought two worlds together or a ruthless exploiter who brought colonialism and slavery? And did he even discover America at all? Al...

Practice more problem-solving at https://brilliant.org/TedEd/Signup to receive the bonus riddle's solution: https://brilliant.org/TedEdWerewolf/Uploaded 08-11-18You’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. You’ve invited them to dinner with a simple plan: to slip a square of a rare antidote...

View full lesson: http://ed.ted.com/lessons/how-do-we-measure-distances-in-space-yuan-sen-tingUploaded 09-10-14When we look at the sky, we have a flat, two-dimensional view. So how do astronomers figure the distances of stars and galaxies from Earth? Yuan-Sen Ting shows us how trigonometric parallaxes, standard candles and more help us determine the distance of objects several billion light years...

Check out our Patreon page: https://www.patreon.com/tededUploaded 12-11-18View full lesson: https://ed.ted.com/lessons/history-vs-henry-viii-mark-robinson-and-alex-gendlerHe was a powerful king whose break with the church of Rome would forever change the course of English history. But was he a charismatic reformer who freed his subjects from a corrupt establishment or a bullying tyrant who used Pa...

View full lesson: http://ed.ted.com/lessons/how-do-we-study-the-stars-yuan-sen-tingUploaded 07-10-14Our best technology can send men to the Moon and probes to the edge of our solar system, but these distances are vanishingly small compared to the size of the universe. How then can we learn about the galaxies beyond our own? Yuan-Sen Ting takes us into deep space to show how astronomers study the s...

Download a free audiobook version of "Man's Search for Meaning" and support TED-Ed's nonprofit mission: https://adbl.co/2z7JGWxUploaded 13-11-18Check out our full book recommendation: https://bit.ly/2JYUn1ySisyphus was both a clever ruler who made his city prosperous, and a devious tyrant who seduced his niece and killed visitors to show off his power. While his violation of the sacred hospitality...

View full lesson: http://ed.ted.com/lessons/what-s-the-value-of-vitamins-ginnie-trinh-nguyenUploaded 06-10-14Vitamins are the building blocks that keep our bodies running; they help build muscle and bone, capture energy, heal wounds and more. But if our body doesn’t create vitamins, how do they get into our system? Ginnie Trinh Nguyen describes what vitamins are, how they get into our bodies -- an...

Check out our Patreon page: https://www.patreon.com/tededUploaded 15-11-18View full lesson: https://ed.ted.com/lessons/the-standard-model-of-particle-physics-jonathan-butterworthIf you were to take a coffee cup, and break it in half, then in half again, and keep carrying on, where would you end up? Could you keep on going forever? Or would you eventually find a set of indivisible building blocks o...

View full lesson: http://ed.ted.com/lessons/why-do-some-people-go-bald-sarthak-sinhaUploaded 02-10-14If you are a living, breathing human being, chances are you have felt sad at least a few times in your life. But what exactly is melancholy, and what (if anything) should we do about it? Courtney Stephens details our still-evolving understanding of sadness -- and even makes a case for its usefulnes...

Explore how bacterial meningitis affects our bodies, why the disease spreads so quickly, and what to do prevent and treat it. Uploaded 19-11-18--In 1987, thousands of people gathered in Saudi Arabia for the annual Hajj pilgrimage. But what started out as a celebration led to a worldwide health crisis: more than 2,000 cases of meningitis broke out, spreading across Saudi Arabia and the rest of the...

Use the scientific method to investigate whether telekinesis — the ability to control objects with our minds — is really possible. Uploaded 30-09-14--Telekinesis, the ability to manipulate matter with the mind alone, is a trait exhibited by some of the most iconic fictional characters, including Neo, Yoda, and, of course, Carrie. But is this mind control actually possible in real life? Emma Bryce...

Check out our Patreon page: https://www.patreon.com/tededUploaded 20-11-18View full lesson: https://ed.ted.com/lessons/the-life-cycle-of-a-neutron-star-david-lunneyAbout once every century, a massive star somewhere in our galaxy runs out of fuel. No longer able to produce sufficient energy to maintain its structure, it collapses under its own gravitational pressure and explodes in a supernova. The...

View full lesson: http://ed.ted.com/lessons/if-matter-falls-down-does-antimatter-fall-up-chloe-malbrunotUploaded 29-09-14Like positive and negative, or debit and credit, matter and antimatter are equal and opposite. So if matter falls down, does antimatter fall up? Chloé Malbrunot investigates that question by placing two atoms — one made of matter, and the other antimatter — in the cockpit of a p...

Find out how students can share their ideas as TED Talks here: http://bit.ly/2zpAQUcUploaded 26-11-18View full lesson: https://ed.ted.com/lessons/who-decides-what-art-means-hayley-levittThere is a question that has been tossed around by philosophers and art critics for decades: how much should an artist's intention affect your interpretation of the work? Do the artist’s plans and motivations affec...

View full lesson: http://ed.ted.com/lessons/cloudy-climate-change-how-clouds-affect-earth-s-temperature-jasper-kirkbyUploaded 25-09-14As the Earth’s surface temperature gradually rises, it has become vital for us to predict the rate of this increase with as much precision as possible. In order to do that, scientists need to understand more about aerosols and clouds. Jasper Kirkby details an experi...

Practice more problem-solving at https://brilliant.org/TedEd/Solution to bonus riddle: https://brilliant.org/TedEdGiantIron/Uploaded 27-11-18The family of giants you work for is throwing a fancy dinner party, but there’s a problem — the elder giant’s favorite shirt is wrinkled! To fix it, you’ll need to power up the giant iron. It needs two batteries to work, but the baby giant mixed the working b...

View full lesson: http://ed.ted.com/lessons/how-cosmic-rays-help-us-understand-the-universe-veronica-bindiUploaded 23-09-14We only know 4% of what the universe is made up of. Can we also know what lies beyond our galaxy ... and if there are undiscovered forms of matter? Luckily, we have space messengers — cosmic rays — that bring us physical data from parts of the cosmos beyond our reach. Veronica...

Download a free audiobook version of "Slaughterhouse Five" and support TED-Ed's nonprofit mission: https://adbl.co/2DPI5YsUploaded 29-11-18Check out our full book recommendation: https://shop.ed.ted.com/products/slaughterhouse-fiveKurt Vonnegut found the tidy, satisfying arcs of many stories at odds with reality, and he set out to explore the ambiguity between good and bad fortune in his own novel...

View full lesson: http://ed.ted.com/lessons/where-do-genes-come-from-carl-zimmerUploaded 22-09-14When life emerged on Earth about 4 billion years ago, the earliest microbes had a set of basic genes that succeeded in keeping them alive. In the age of humans and other large organisms, there are a lot more genes to go around. Where did all of those new genes come from? Carl Zimmer examines the mutati...