TED-Ed
TED-Ed creates award-winning animated shorts that explore a wide range of educational topics, from science and history to art and philosophy. Each video is designed to spark curiosity and is accompanied by supplemental learning materials on their website. The podcast version offers the same engaging content in audio format, perfect for learning on the go.
Episodes
Introducing Julia Delmedico
This is one of five student perspectives featured in the PBS special "TED Talks Education" (#TEDTalksed.) Learn more here: https://www.ted.com/promos/TEDTalksEducationSpecial thanks to our partners in this endeavor: WNET, PBS and the Corporation for Public Broadcasting.
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What is Juneteenth, and why is it meaningful? - Karlos K. Hill and Soraya Field Fiorio
Get to know the history of Juneteenth, a commemoration of the end of slavery in the United States after the Civil War.--At the end of the Civil War, though slavery was technically illegal in all states, it still persisted in the last bastions of the Confederacy. This was the case when Union General Gordon Granger marched his troops into Galveston, Texas on June 19th and announced that all enslaved
How the Mongols harnessed horses to forge an empire - William T. Taylor
Explore how the domestication of horses influenced the fate of entire civilizations and dramatically altered human history.--People have been captivated by horses for a long time. They appear more than any other animal in cave paintings dating back 30,000 years. But how did horses make the journey from wild animals to ones humans could hitch themselves to and even ride? William T. Taylor explores
The epic of Gilgamesh, the king who tried to conquer death - Soraya Field Fiorio
Dive into the Epic of Gilgamesh, and follow the king of Uruk on a series of dangerous quests as he searches for immortality.--In 1849, in the ancient city of Nineveh in Iraq, archaeologists sifted through dusty remains, hoping to find records to prove that Bible stories were true. What they found instead was a 4,000-year-old story inscribed on crumbling clay tablets— a story that was so riveting,
One of the most "threatening" men in American history - Keenan Norris
Get to know the story of David Walker, an abolitionist whose antislavery pamphlet made him an enemy of the US government.--In 1830, David Walker sewed a pamphlet into the lining of a coat. The volume was thin enough to be hidden, but its content was far from insubstantial. At the time, many members of the US government considered this pamphlet to be one of the most dangerous documents in American
The woman who stared at the Sun - Alex Gendler
Get to know the legacy of Hisako Koyama, whose drawings of the Sun’s surface helped scientists reconstruct 400 years of sunspot activity.--In 1944, amateur astronomer Hisako Koyama’s latest endeavor was sketching the Sun’s shifting surface. She spent weeks angling her telescope towards the Sun and tracking every change she saw with drawings. Little did she know, these drawings were the start of on
The foundations of the Higgs boson - Dave Barney and Steve Goldfarb
View full lesson: http://ed.ted.com/lessons/the-basics-of-boson-dave-barney-and-steve-goldfarbIn 2012, scientists at CERN discovered evidence of the Higgs boson. The what? The Higgs boson is one of two types of fundamental particles and is a particular game-changer in the field of particle physics, proving how particles gain mass. Using the Socratic method, CERN scientists Dave Barney and Steve Go
Human sperm vs. the sperm whale - Aatish Bhatia
View full lesson: http://ed.ted.com/lessons/human-sperm-vs-the-sperm-whale-aatish-bhatiaTraveling is extremely arduous for microscopic sperm -- think of a human trying to swim in a pool made of...other humans. We can compare the journey of a sperm to that of a sperm whale by calculating the Reynolds number, a prediction of how fluid will behave, often fluctuating due to size of the swimmer. Aatish
Life's third act - Jane Fonda
Within this generation, an extra 30 years have been added to our life expectancy -- and these years aren't just a footnote or a pathology. In this talk, Jane Fonda asks how we can think about this new phase of our lives. (Filmed at TEDxWomen.)Talk by Jane Fonda.
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Curious answers to the psychopath test - Jon Ronson
Is there a definitive line that divides crazy from sane? With a hair-raising delivery, Jon Ronson, author of The Psychopath Test, illuminates the gray areas between the two. (With live-mixed sound by Julian Treasure and animation by Evan Grant.)Talk by Jon Ronson.
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What occurred to antimatter? - Rolf Landua
View full lesson: http://ed.ted.com/lessons/what-happened-to-antimatter-rolf-landuaParticles come in pairs, which is why there should be an equal amount of matter and antimatter in the universe. Yet, scientists have not been able to detect any in the visible universe. Where is this missing antimatter? CERN scientist Rolf Landua returns to the seconds after the Big Bang to explain the disparity tha
What happens if a manufactured virus escapes the lab?
How do we keep labs that handle dangerous pathogens safe and leak-free? Dig into the ongoing debate over virology research. --Since the 1970s, researchers have engineered superbugs. While this research could help us prepare for future outbreaks, the stakes of this work are extremely high: if even one dangerous virus escaped a lab, it could cause a global pandemic. So, what can we do to minimize ri
How do airplanes actually remain in flight? - Raymond Adkins
Explore the physics of flight, and discover how aerodynamic lift generates the force needed for planes to fly.--By 1917, Albert Einstein had explained the relationship between space and time. But, that year, he designed a flawed airplane wing. His attempt was based on an incomplete theory of how flight works. Indeed, insufficient and inaccurate explanations still circulate today. So, where did Ein
The passage across the high wire - Philippe Petit
Even a death-defying magician has to start somewhere. High-wire artist Philippe Petit takes you on an intimate journey from his first card trick at age 6 to his tightrope walk between the Twin Towers. Talk by Philippe Petit.
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The myth of the stolen eyeballs - Nathan D. Horowitz
Discover the Siekopai myth of the air goblins, spirits who fly and control the winds, as they clash with the human world. --Deep in the Amazon rainforest in the river Nea’ocoyá lived a school of particularly big and tasty fish. When the rains came and the water rose the fish appeared, and swam away as the waters fell. Villagers along the river followed them to a lagoon and set up camp. But their y
What's so special about Viking ships? - Jan Bill
Explore the history and technology of Viking longships, which helped the Scandinavians conquer trade routes and new territories.--As the Roman Empire flourished, Scandinavians had small settlements and no central government. Yet by the 11th century, they had spread far from Scandinavia, gaining control of trade routes throughout Europe, conquering kingdoms as far as Africa, and building outposts i
Who owns the "wilderness"? - Elyse Cox
Explore the creation of national parks and the importance of finding a balance between public use and ecological preservation.--In 1903, US President Theodore Roosevelt took a camping trip in California’s Yosemite Valley with conservationist John Muir. Roosevelt famously loved the outdoors, but Muir had invited him for more than just camping: Yosemite was in danger. It was part of a struggle to se
Got seeds? Just add bleach, acid, and sandpaper - Mary Koga
View full lesson: http://ed.ted.com/lessons/got-seeds-just-add-bleach-acid-and-sandpaper-mary-kogaFor a seed to start growing, its embryo must emerge from its hard coat. In nature the embryo is aided by frost and animal digestion -- but humans can help too. Nicking, filing, and soaking the seed in hot water or acid are all forms of scarification, or ways to speed up germination by breaking down th
Vomit, poop, and small cockroaches: How the leafcutter ant queen runs her farm - Charles Wallace
Take a look inside the leafcutter ant colony as a queen begins her reign and the ants work to sustain their supply of fungus.--In a Texas clearing, an ancient tale that ties four species together is unfurling. The first involved is a soon-to-be queen leafcutter ant. The second is fungus, a piece of which she scoops into her mouth pocket. The third are cockroaches, which nestle under her wings. And
Creative houses from reclaimed stuff - Dan Phillips
In this funny and insightful talk, builder Dan Phillips tours us through a dozen homes he's built in Texas using recycled and reclaimed materials in wildly creative ways. Brilliant, low-tech design details will refresh your own creative drive. (Filmed at TEDxHouston.)Talk by Dan Phillips.
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One of the most prohibited books of all time - Mollie Godfrey
Explore why Maya Angelou’s memoir “I Know Why The Caged Bird Sings” became one of the most frequently banned books of all time.--In 1998, a school district removed one of American literature’s most acclaimed works from its curriculum. Parents pushing for the ban said the book was both “sexually explicit” and “anti-white.” The book at the center of this debate was Maya Angelou’s “I Know Why The Cag
Vast Data - Tim Smith
View full lesson: http://ed.ted.com/lessons/exploration-on-the-big-data-frontier-tim-smithThere is a mind-boggling amount of data floating around our society. Physicists at CERN have been pondering how to store and share their ever more massive data for decades - stimulating globalization of the internet along the way, whilst 'solving' their big data problem. Tim Smith plots CERN's involvement wit
A day in the life of the oracle of Delphi - Mark Robinson
Follow Aristonike, an Oracle-in-training in Delphi, as she studies to become the Pythia and communicate Apollo’s will and prophecies.--As the sun rises over Delphi in 500 BCE, Aristonike hurries to the temple of Apollo where a single oracle known as the Pythia communicates Apollo’s will. Reserved only for women, this is the most important job in the city— and one that Aristonike will soon have to
Archeology from satellite imagery - Sarah Parcak
In this short talk, TED Fellow Sarah Parcak introduces the field of "space archeology" -- using satellite images to search for clues to the lost sites of past civilizations. Talk by Sarah Parcak.
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Can you solve the Trojan War riddle? - Dennis E. Shasha
Practice more problem-solving at https://brilliant.org/TedEd--On Olympus, you’ve been waiting for an opportunity to bring the bloody Trojan War to its conclusion. The two sides have agreed to a brief truce, and when you consult the Fates, they advise: should the peace last for 10 days, all will end soon. But if the truce is broken, there will be 10 more devastating years of war. Can you help the G
Light waves, visible and invisible
Each kind of light has a unique wavelength, but human eyes can only perceive a tiny slice of the full spectrum -- the very narrow range from red to violet. Microwaves, radio waves, x-rays and more are hiding, invisible, just beyond our perception. Here is a closer look at the waves we can't see. Animated by Pew36 Animation Studios.
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The man who lost his tactile sensation - Antonio Cataldo
Explore the science behind how your body and brain process different sensations like touch, pain, temperature, and spatial awareness.--We don’t often think of touch as being a vital part of movement, but touch is one part of a network that oversees all the sensations arising from the surface and interior of our bodies. Touch, pain, temperature, and our spatial awareness are regulated by this syste
Sometimes it's valuable to release the driver's seat - Baba Shiv
Over the years, research has shown a counterintuitive fact about human nature: That sometimes, having too much choice makes us less happy. This may even be true when it comes to medical treatment. Baba Shiv shares a fascinating study that measures why choice opens the door to doubt, and suggests that ceding control -- especially on life-or-death decisions -- may be the best thing for us. (Filmed a
Can you freeze your body and be revived? - Shannon N. Tessier
Dig into the field of cryobiology and explore the possibility of humans being frozen and preserved for future resurrection.--In 1967, James Bedford had a plan to cheat death. He was the first person to be cryogenically frozen. This process promised to preserve his body until a theoretical future when humanity could cure any illness, and essentially, reverse death. So is it possible to freeze a hum
What's yet to explore? - Nathan Wolfe
We've been to the moon, we've mapped the continents, we've even been to the deepest point in the ocean -- twice. What's left for the next generation to explore? Biologist and explorer Nathan Wolfe suggests this answer: Almost everything. And we can start, he says, with the world of the unseeably small.Talk by Nathan Wolfe.
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Why do we have hair in such random places? - Nina G. Jablonski
Discover how humans lost their fur as they evolved from primates, and why we still have hair on our bodies.--We have lots in common with our closest primate relatives. But comparatively, humans seem a bit… underdressed. Instead of thick fur covering our bodies, many of us mainly have hair on top of our heads— and a few other places. So, how did we get so naked? And why do we have hair where we do?
This one unusual trick will get you infinite gold - Dan Finkel
Practice more problem-solving at https://brilliant.org/TedEd--A few years ago, the king decided your life would be forfeit unless you tripled the gold coins in his treasury. Fortunately, a strange little man appeared and magically performed the feat. Unfortunately, you promised him your first-born child in exchange for his help — and today he’s come to collect. Can you figure out how to outsmart t
Could you survive the real Twilight Zone? - Philip Renaud and Kenneth Kostel
Find out how a hatchetfish survives its daily journey from the depths of the ocean’s Twilight Zone to the resource-rich surface.--You’re traveling deep beneath the ocean’s surface, where faint lights flicker and toothy grins flash. Your mission is to survive these depths and journey to the surface after sundown to feed. And as a hatchetfish, almost every other deep-sea creature is trying to eat yo
What happens when Arctic permafrost thaws? - Jessica Howard and Brendan Rogers
Discover what scientists have found buried in the Arctic permafrost, and find out the far-reaching effects of its melting. --In June 2022, a gold miner in the Canadian Yukon made a remarkable discovery. While working on the traditional lands of the Tr’ondëk Hwëch’in First Nation, he uncovered the exceptionally well-preserved, frozen remains of a wooly mammoth calf that died 30,000 years ago. And t
Why is cotton in everything? - Michael R. Stiff
Dig into the science of how cotton transforms from seed to fiber, and how these cotton fibers are used to make everything from fabrics, to currency, and fishing nets.--Centuries ago, the Inca developed ingenuous suits of armor that could protect warriors from even the fiercest physical attacks. These hardy structures were made not from iron or steel, but rather something unexpectedly soft: cotton.
There are no scraps of men - Alberto Cairo
Alberto Cairo's clinics in Afghanistan used to close down during active fighting. Now, they stay open. In this powerful talk, Cairo tells the moving story of why -- and how he found humanity and dignity in the midst of war. (Filmed at TEDxRC2.)Talk by Alberto Cairo.
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How to topple a dictator - Srdja Popovic
2011 was a year of extraordinary people-powered resistance, starting with Arab Spring and spreading across the world. How did this resistance work so well? Srdja Popovic (who led the nonviolent movement that took down Milosevic in Serbia in 2000) lays out the plans, skills and tools each movement needs -- from nonviolent tactics to a sense of humor. (Filmed at TEDxKrakow.)Talk by Srdja Popovic.
Le
Puzzles of vernacular: Tuxedo - Jessica Oreck
View full lesson: http://ed.ted.com/lessons/mysteries-of-vernacular-tuxedo-jessica-oreckHow did tuxedo's roots extend from Native American history to black tie evening wear? Jessica Oreck reveals what the Delaware Indians and formal fashion have in common.Lesson by Jessica Oreck and Rachael Teel, animation by Jessica Oreck.
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What is dyslexia? - Kelli Sandman-Hurley
View full lesson: http://ed.ted.com/lessons/what-is-dyslexia-kelli-sandman-hurleyDyslexia affects up to 1 in 5 people, but the experience of dyslexia isn't always the same. This difficulty in processing language exists along a spectrum -- one that doesn't necessarily fit with labels like "normal" and "defective." Kelli Sandman-Hurley urges us to think again about dyslexic brain function and to cel
Historical icons - Amy Bissetta
View full lesson: http://ed.ted.com/lessons/historical-role-models-amy-bissettaMany notable American historical figures are considered role models -- but why? George Washington was devilishly smart, and Abraham Lincoln was a brave leader, but have you heard of Sybil Ludington or Beriah Green? Amy Bissetta expounds on the lessons of character we can learn from these historical giants, whether you'v
The case for collaborative consumption - Rachel Botsman
In her talk, Rachel Botsman says we're "wired to share" -- and shows how websites like Zipcar and Swaptree are changing the rules of human behavior. (Filmed at TEDxSydney.)Talk by Rachel Botsman.
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How stretching actually modifies your muscles - Malachy McHugh
Dig into the science of stretching, and find out what it actually does to your muscles and how you can improve your flexibility.--An athlete is preparing for a game. They’ve put on their gear and done their warmup, and now it’s time for one more routine — stretching. Typically, athletes stretch before physical activity to avoid injuries like strains and tears. But does stretching actually prevent
Dark matter: The matter we cannot observe - James Gillies
Check out our Patreon page: https://www.patreon.com/tededView full lesson: http://ed.ted.com/lessons/dark-matter-the-matter-we-can-t-see-james-gilliesThe Greeks had a simple and elegant formula for the universe: just earth, fire, wind, and water. Turns out there's more to it than that -- a lot more. Visible matter (and that goes beyond the four Greek elements) comprises only 4% of the universe. CE
Bird migration, a perilous journey - Alyssa Klavans
Explore why migration is so taxing and dangerous for birds, and what ways we can help birds on their journey.--Nearly 200 species of songbirds migrate south for winter, some traveling up to 7,000 miles. No easy task, the annual journey is dangerous to birds due to landscape change -- so much so, that only half the birds that migrate south will return home for spring. Alyssa Klavans details why bir
What if you underwent every human life in history?
Examine the ethical stance known as longtermism, which is the idea that we should be doing more to protect future generations.--Imagine that your life began as one of the planet’s first humans. After dying, you're reincarnated as the second human ever to live. You then return as the third person, the fourth, the fifth, and so on – living the lives of every human that’s ever walked the Earth. How w
Why is 'x' the enigma? - Terry Moore
Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer. Talk by Terry Moore.
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The moral dangers of non-lethal weapons - Stephen Coleman
View full lesson: http://ed.ted.com/lessons/the-moral-dangers-of-non-lethal-weapons-stephen-colemanPepper spray and tasers are in increasing use by both police and military, and more exotic non-lethal weapons such as heat rays are in the works. In this talk, ethicist Stephen Coleman explores the unexpected consequences of their introduction and asks some challenging questions. (Filmed at TEDxCanbe
A day in the life of a teenager in medieval Baghdad - Birte Kristiansen and Petra Sijpesteijn
Join siblings Hisham and Asma in medieval Baghdad as they prepare and gather supplies for the hajj, a holy pilgrimage to Mecca.--It’s 791 CE. As the morning sun shines on the Golden Gate Palace, brother and sister Hisham and Asma prepare for the journey of a lifetime: the hajj, a holy pilgrimage to Mecca. They intend to travel with the big hajj caravan— but a last-minute mishap threatens to undo m
How do you know who deserves your trust? - Ram Neta
View full lesson: http://ed.ted.com/lessons/how-do-you-know-whom-to-trust-ram-netaWe believe a lot of things because we've been told - from our personal acquaintances and also experts. With so many belief systems being passed to us, how do we know whom to trust? Using contemporary examples, Ram Neta explains when listening to experts is a good idea...and when it's not.Lesson by Ram Neta, animation
How to handle your emotions
Explore the framework known as the Process Model, a psychological tool to help you identify, understand, and regulate your emotions.--After a week of studying, you feel confident that you'll ace your exam. But when you get your grade back, it's much lower than you expected. You’re devastated, and the disappointment is hard to shake. Should you be trying to look on the bright side? And is controlli
What causes panic attacks, and how can you prevent them? - Cindy J. Aaronson
Dig into the science of what triggers panic attacks, how to recognize them, and the available treatments for panic disorder.--Countless poets and writers have tried to put words to the experience of a panic attack— a sensation so overwhelming, many people mistake it for a heart attack, stroke, or other life-threatening crisis. Studies suggest that almost a third of us will experience at least one
How did feathers come to be? - Carl Zimmer
View full lesson: http://ed.ted.com/lessons/how-did-feathers-evolve-carl-zimmerTo look at the evolution of modern bird feathers, we must start a long time ago, with the dinosaurs from whence they came. We see early incarnations of feathers on dinosaur fossils, and remnants of dinosaurs in a bird's wish bone. Carl Zimmer explores the stages of evolution and how even the reasons for feathers have ev
How bones make blood - Melody Smith
Dig into the science of how bone marrow transplants work and find out how you could become a donor by visiting https://join.bethematch.org/teded--Bones might seem rock-solid, but they’re actually quite porous inside. Most of the large bones of your skeleton have a hollow core filled with soft bone marrow. Marrow's most essential elements are blood stem cells and for patients with advanced blood ca
Is AI the most transformative technology of the century?
Is the 21st century the most pivotal time in human history? Explore how the decisions we make now may impact humanity’s future.--Is it possible that this century is the most important one in human history? The 21st century has already proven to be a period of rapid growth. We’re on the cusp of developing new technologies that could entirely change the way people live— and could contribute to unpre
The Hawaiian legend of the wind keepers - Sydney Iaukea
Get to know the Hawaiian legend of the sacred wind gourd and follow Paka’a's fight to restore his rightful place beside the king.--Long ago, the Hawaiian wind goddess wielded a gourd that housed the winds of the Islands. It came to hold her bones, along with the life force they carried, and was eventually passed to her grandson, Paka'a. Like his father before him, he became the trusted attendant t
The dance of the dung beetle - Marcus Byrne
A dung beetle has a brain the size of a grain of rice, and yet shows a tremendous amount of intelligence when it comes to rolling its food source -- animal excrement -- home. How? It all comes down to a dance. (Filmed at TEDxWitsUniversity.)Talk by Marcus Byrne.
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The sharks that hunt in forests - Luka Seamus Wright
Discover the unique adaptations of marine forests, the ecosystems that provide food and shelter for sharks and diverse coastal species.--Forests don’t usually come to mind as a habitat for sharks. But marine forests provide a home for 35% of the world’s sharks. Mangrove forests in particular function as an essential bridge between land and sea and have evolved various adaptations that protect them
How does this all-female species multiply? - Susana Freitas and Darren Parker
Explore the science of parthenogenesis, a form of reproduction which allows animals to develop an embryo without fertilization.--In 2021, workers at a Sardinian aquarium were stunned by the birth of a smooth-hound shark. What was shocking was that, for the last decade, the shark’s mother had been living only with other females. So, how was this birth possible? And can other species reproduce this
Hey science teachers -- make it entertaining - Tyler DeWitt
High school science teacher Tyler DeWitt was ecstatic about a lesson plan on bacteria (how cool!) -- and devastated when his students hated it. The problem was the textbook: it was impossible to understand. He delivers a rousing call for science teachers to ditch the jargon and extreme precision, and instead make science sing through stories and demonstrations. (Filmed at TEDxBeaconStreet.)Talk by
Ugly History: The U.S. Syphilis Experiment - Susan M. Reverby
Dig into the unethical Tuskegee Syphilis Study, which spanned 40 years and lied to its participants about receiving treatment for syphilis.--Afflicting nearly 1 in 10 Americans, syphilis was ravaging the U.S. in the 1930s. Many doctors believed syphilis affected Black and white patients differently, and the Public Health Service launched an experiment to investigate, recruiting 600 Black men to ta
Consolidate medical patents, save lives - Ellen 't Hoen
View full lesson: http://ed.ted.com/lessons/pool-medical-patents-save-lives-ellen-t-hoenPatenting a new drug helps finance its immense cost to develop -- but that same patent can put advanced treatments out of reach for sick people in developing nations, at deadly cost. Ellen 't Hoen talks about an elegant, working solution to the problem: the Medicines Patent Pool. (Filmed at TEDxZurich.)Talk by
Why are frogs disappearing? - Kerry M. Kriger
View full lesson: http://ed.ted.com/lessons/disappearing-frogs-kerry-m-krigerFrogs (and amphibians in general) are in danger -- worldwide, nearly one-third of the world's amphibian species are on the verge of extinction. And yet, frogs contribute to our well-being in many important ways. Kerry M. Kriger describes why frogs are in trouble and how you can help save them. Lesson by Kerry M. Kriger, a
It's time to question bio-engineering - Paul Root Wolpe
Bioethicist Paul Root Wolpe describes an astonishing series of recent bio-engineering experiments, from glowing dogs to mice that grow human ears. He asks: Isn't it time to set some ground rules? (Filmed at TEDxPeachtree.)Talk by Paul Root Wolpe.
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The archives the British Empire didn't want you to see - Audra A. Diptée
Explore the British policy called Operation Legacy, where the government hid incriminating documents from its former colonies.--In 2009, five Kenyan people took a petition to the British Prime Minister. They claimed they endured human rights abuses in the 1950s, while Kenya was under British colonial rule, and demanded reparations. They had no documentary evidence that Britain sanctioned systems o
A ensemble of heroes - April Gudenrath
View full lesson: http://ed.ted.com/lessons/a-host-of-heroes-april-gudenrathWhat can some of literature's most famous heroes teach us? From the epic hero (like Beowulf) to the tragic hero (like Oedipus), each has something distinctive to share. April Gudenrath describes the many faces of the fictional hero -- and shows how they can inspire everyday people.Lesson by April Gudenrath, animation by Bu
What is a fecal microbial transplantation? - Kathryn M. Stephenson and David L. Suskind
Dig into the science of fecal microbial transplantation, where doctors transfer feces into a patient to help reset their gut microbiome.--1,700 years ago, Chinese alchemist Ge Hong was renowned for his soup that could cure diarrhea-stricken patients. It had a surprising secret ingredient: feces. While it might seem unwise to consume feces, exciting new research suggests that taking poop into the b
Can we create the "perfect" farm? - Brent Loken
Explore the innovative ways countries are revolutionizing farming to ensure we can feed humanity in a way that works with the environment.--About 10,000 years ago, humans began to farm. This agricultural revolution was a turning point in our history and enabled the existence of civilization. Today, nearly 40% of our planet is farmland. Spread all over the world, these lands are the pieces to a glo
Can you solve the riddle and escape Hades? - Dan Finkel
Practice more problem-solving at https://brilliant.org/TedEd/--The underworld is overcrowded, and Zeus has ordered Hades to let some spirits out. Hades arranges all the souls of the dead in a line before Cerberus. When one of his three heads bites down on the soul in front of it, they’ll get returned to the land of the living. Anyone to the left must stay in Hades forever. Can you pick the right s
How (and why) to read William Faulkner - Sascha Morrell
Get to know the works of William Faulkner, whose inventive literature made him one of America’s most remarkable writers.--William Faulkner is considered one of America’s most remarkable and perplexing writers. He confused his audience intentionally, using complex sentences, unreliable narrators, and outlandish imagery. His body of work is shocking, inventive, hilarious, and challenging. So how can
Licking bees and pulping trees: The reign of a wasp queen - Kenny Coogan
Take a look inside a hive as a wasp queen begins her reign; founding a colony, hunting to feed her brood and defending against intruders. -- As the sun rises, something royal stirs inside a pile of firewood. It's the wasp queen; one of thousands who mated in late autumn and hibernated through the winter. Now she must emerge into the spring air to begin her reign. This queen is the lone survivor of
We can halt the next epidemic - George Zaidan
What makes for an effective outbreak response? Explore successful systems from around the world that prevented epidemics.--In 2013, an Ebola outbreak began in Guinea. The country had no formal response system and the outbreak became the largest Ebola epidemic in recorded history. Guinea then completely overhauled their response system, and were able to successfully combat another outbreak in 2021.
What we learned from 5 million books - Erez Lieberman Aiden and Jean-Baptiste Michel
View full lesson: http://ed.ted.com/lessons/what-we-learned-from-5-million-books-erez-lieberman-aiden-and-jean-baptiste-michelHave you played with Google Labs' Ngram Viewer? It's an addicting tool that lets you search for words and ideas in a database of 5 million books from across centuries. Erez Lieberman Aiden and Jean-Baptiste Michel show us how it works, and a few of the surprising things we
The emergence and downfall of the Mughal Empire - Stephanie Honchell Smith
Trace the rise and fall of the Mughal Empire, which became one of the wealthiest and most powerful states in the early modern world.--Though he was descended from some of the world’s most successful conquerors, Babur struggled to gain a foothold among the many other ambitious princes in Central Asia. So he turned his attention to India, where his descendants stayed and built the Mughal Empire. Ste
Music and emotion across time - Michael Tilson Thomas
View full lesson: http://ed.ted.com/lessons/music-and-emotion-through-time-michael-tilson-thomasIn this epic overview, Michael Tilson Thomas traces the development of classical music through the development of written notation, the record, and the re-mix.Talk by Michael Tilson Thomas.
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Food expiration dates don't mean what you believe - Carolyn Beans
Find out what expiration date labels on food actually mean, and discover ways communities and governments can lessen food waste. --Countries around the world waste huge amounts of food every year: roughly a fifth of food items in the US are tossed because consumers aren’t sure how to interpret expiration labels. But most groceries are still perfectly safe to eat past their expiration dates. If the
A 40-year blueprint for energy - Amory Lovins
View full lesson: http://ed.ted.com/lessons/a-40-year-plan-for-energy-amory-lovinsIn this intimate talk filmed at TED's offices, energy innovator Amory Lovins shows how to get the US off oil and coal by 2050, $5 trillion cheaper, with no Act of Congress, led by business for profit. The key is integrating all four energy-using sectors—and four kinds of innovation. Talk by Amory Lovins.
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, the history of a page not found - Renny Gleeson
Oops! Nobody wants to see the 404: Page Not Found. But as Renny Gleeson shows us, while he runs through a slideshow of creative and funny 404 pages, every error is really a chance to build a better relationship. Talk by Renny Gleeson.
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String theory and the underlying frameworks of the universe - Clifford Johnson
View full lesson: http://ed.ted.com/lessons/string-theory-and-the-hidden-structures-of-the-universe-clifford-johnsonWhat is everything made of? Thus far, we can break everything in the universe down to a few very small elementary particles. But they fit into strange patterns that are not understood. Some scientists believe that this is because we can go deeper - perhaps to simple vibrating strings
Grasping how life integrates together - Bobbi Seleski
View full lesson: http://ed.ted.com/lessons/making-sense-of-how-life-fits-together-bobbi-seleskiFrom something as miniscule as a cell to the biosphere we all call home, living things fit together in numerous interesting ways. Bobbi Seleski catalogs biology from our body and beyond, tracking how unicellular organisms, tissues, organs, organ systems, organisms, populations, communities, ecosystems,
Natural pest control ... using bugs! - Shimon Steinberg
View full lesson: http://ed.ted.com/lessons/natural-pest-control-using-bugs-shimon-steinbergShimon Steinberg looks at the difference between pests and bugs -- and makes the case for using good bugs to fight bad bugs, avoiding chemicals in our quest for perfect produce. (Filmed at TEDxTelAviv.)Talk by Shimon Steinberg.
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