yt:channel:UCsooa4yRKGN_zEE8iknghZA UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2011-03-01T20:33:10+00:00 yt:video:LpjX3kHXcR0 LpjX3kHXcR0 UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-07-20T15:00:30+00:00 2017-07-22T07:09:05+00:00 Can you find the next number in this sequence? - Alex Gendler View full lesson: http://ed.ted.com/lessons/can-you-find-the-next-number-in-this-sequence-alex-gendler 1, 11, 21, 1211, 111221. These are the first five elements of a number sequence. Can you figure out what comes next? Alex Gendler reveals the answer and explains how beyond just being a neat puzzle, this type of sequence has practical applications as well. Lesson by Alex Gendler, animation by Artrake Studio. yt:video:foLf5Bi9qXs foLf5Bi9qXs UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-07-17T15:13:56+00:00 2017-07-22T07:06:32+00:00 How does caffeine keep us awake? - Hanan Qasim View full lesson: http://ed.ted.com/lessons/how-does-caffeine-keep-us-awake-hanan-qasim Over 100,000 metric tons of caffeine are consumed around the world every year. That’s equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven’t had enough sleep — but it can also raise our blood pressure and make us feel anxious. So how does it keep us awake? Hanan Qasim shares the science behind the world’s most widely used drug. Lesson by Hanan Qasim, animation by Adriatic Animation. yt:video:Tudal_4x4F0 Tudal_4x4F0 UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-07-13T15:01:23+00:00 2017-07-22T07:03:44+00:00 How does fracking work? - Mia Nacamulli View full lesson: http://ed.ted.com/lessons/how-does-fracking-work-mia-nacamulli Deep underground lie stores of once-inaccessible natural gas. There’s a technology, called hydraulic fracturing, or “fracking,” that can extract this natural gas, potentially powering us for decades to come. So how does fracking work and why is it a source of such heated controversy? Mia Nacamulli explains the ins and outs of fracking. Lesson by Mia Nacamulli, animation by Sharon Colman. yt:video:E91bGT9BjYk E91bGT9BjYk UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-07-06T15:04:24+00:00 2017-07-22T06:33:31+00:00 How to spot a misleading graph - Lea Gaslowitz View full lesson: http://ed.ted.com/lessons/how-to-spot-a-misleading-graph-lea-gaslowitz When they’re used well, graphs can help us intuitively grasp complex data. But as visual software has enabled more usage of graphs throughout all media, it has also made them easier to use in a careless or dishonest way — and as it turns out, there are plenty of ways graphs can mislead and outright manipulate. Lea Gaslowitz shares some things to look out for. Lesson by Lea Gaslowit, animation by Mark Phillips. yt:video:W0GpIMNTPYg W0GpIMNTPYg UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-07-03T14:59:49+00:00 2017-07-22T07:07:40+00:00 What causes kidney stones? - Arash Shadman View full lesson: http://ed.ted.com/lessons/what-causes-kidney-stones-arash-shadman The biggest kidney stone on record weighed more than a kilogram and was 17 centimeters in diameter. The patient didn’t actually swallow a stone the size of a coconut; kidney stones form inside the body. So how do they grow in the first place? And why are they so painful to get out? Arash Shadman shares the science behind kidney stones. Lesson by Arash Shadman, animation by TED-Ed. yt:video:8qK0hxuXOC8 8qK0hxuXOC8 UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-29T15:00:05+00:00 2017-07-22T06:04:23+00:00 How do drugs affect the brain? - Sara Garofalo View full lesson: http://ed.ted.com/lessons/how-do-drugs-affect-the-brain-sara-garofalo Most people will take a pill, receive an injection, or otherwise take some kind of medicine during their lives. But most of us don’t know anything about how these substances actually work. How can various compounds impact the way we physically feel, think, and even behave? Sara Garofalo explains how some drugs can alter the communication between cells in the brain. Lesson by Sara Garofalo, animation by Adriatic Animation. yt:video:lLOALyWls2k lLOALyWls2k UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-26T15:00:11+00:00 2017-07-22T07:05:59+00:00 Can you solve the fish riddle? - Steve Wyborney View full lesson: http://ed.ted.com/lessons/can-you-solve-the-fish-riddle-steve-wyborney As the cargo director on the maiden voyage of the S.S. Buoyant, you’ve agreed to transport several tanks containing the last specimens of an endangered fish species to their new aquarium. Unfortunately, the boat is battered by a fierce storm, throwing your precious cargo overboard. Can you get the fish to safety and save the day? Steve Wyborney shows how. Lesson by Steve Wyborney, animation by Artrake Studio. yt:video:quzjmZ-7s6w quzjmZ-7s6w UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-22T15:01:01+00:00 2017-07-22T06:11:50+00:00 Who built Great Zimbabwe? And why? - Breeanna Elliott View full lesson: http://ed.ted.com/lessons/who-built-great-zimbabwe-and-why-breeanna-elliott Stretched across a tree-peppered expanse in Southern Africa lies the ruins of Great Zimbabwe, a medieval stone city of astounding wealth. Located in the present-day country of Zimbabwe, it’s the site of the second largest settlement ruins in Africa. But its history is controversial, defined by decades of dispute about who built it and why. Breeanna Elliott explores the mystery of Great Zimbabwe. Lesson by Breeanna Elliott, animation by JodyPrody. yt:video:YEJ2qryXcIQ YEJ2qryXcIQ UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-20T15:00:43+00:00 2017-07-22T06:17:08+00:00 How to squeeze electricity out of crystals - Ashwini Bharathula View full lesson: http://ed.ted.com/lessons/how-to-squeeze-electricity-out-of-crystals-ashwini-bharathula It might sound like science fiction, but if you press on a crystal of sugar, it will actually generate its own electricity. This simple crystal can act like a tiny power source because sugar happens to be piezoelectric. Ashwini Bharathula explains how piezoelectric materials turn mechanical stress, like pressure, sound waves and other vibrations into electricity, and vice versa. Lesson by Ashwini Bharathula, animation by Karrot Animation. yt:video:R9OCA6UFE-0 R9OCA6UFE-0 UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-19T15:00:18+00:00 2017-07-22T06:57:03+00:00 The philosophy of Stoicism - Massimo Pigliucci View full lesson: http://ed.ted.com/lessons/the-philosophy-of-stoicism-massimo-pigliucci What is the best life we can live? How can we cope with whatever the universe throws at us and keep thriving nonetheless? The ancient Greco-Roman philosophy of Stoicism explains that while we may not always have control over the events affecting us, we can have control over how we approach things. Massimo Pigliucci describes the philosophy of Stoicism. Lesson by Massimo Pigliucci, animation by Compote Collective. yt:video:T24hdchCVIg T24hdchCVIg UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-15T15:00:06+00:00 2017-07-22T00:55:47+00:00 What can you learn from ancient skeletons? - Farnaz Khatibi View full lesson: http://ed.ted.com/lessons/what-can-you-learn-from-ancient-skeletons-farnaz-khatibi Ancient skeletons can tell us a great deal about the past, including the age, gender and even the social status of its former owner. But how can we know all of these details simply by examining some old, soil-caked bones? Farnaz Khatibi examines a fascinating branch of science known as biological anthropology. Lesson by Farnaz Khatibi, animation by TED-Ed. yt:video:v5FL9VTBZzQ v5FL9VTBZzQ UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-13T14:59:45+00:00 2017-07-22T03:11:28+00:00 The power of creative constraints - Brandon Rodriguez View full lesson: http://ed.ted.com/lessons/the-power-of-creative-constraints-brandon-rodriguez Imagine you were asked to invent something new. It could be whatever you want, made from anything you choose, in any shape or size. That kind of creative freedom sounds so liberating, doesn’t it? Or ... does it? if you're like most people you’d probably be paralyzed by this task. Why? Brandon Rodriguez explains how creative constraints actually help drive discovery and innovation. Lesson by Brandon Rodriguez, animation by CUB Animation. yt:video:kB-dJaCXAxA kB-dJaCXAxA UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-12T15:01:38+00:00 2017-07-22T06:58:03+00:00 Why do people join cults? - Janja Lalich View full lesson: http://ed.ted.com/lessons/why-do-people-join-cults-janja-lalich Today, there are thousands of cults around the world. Broadly speaking, a cult is a group or movement with a shared commitment to a usually extreme ideology that’s typically embodied in a charismatic leader. But what exactly differentiates cults from other groups – and why do people join them? Janja Lalich describes how cults recruit and manipulate their members. Lesson by Janja Lalich, animation by Globizco. yt:video:w6JFRi0Qm_s w6JFRi0Qm_s UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-08T15:02:30+00:00 2017-07-22T06:01:52+00:00 The genius of Marie Curie - Shohini Ghose View full lesson: http://ed.ted.com/lessons/the-genius-of-marie-curie-shohini-ghose Marie Skłodowska Curie’s revolutionary research laid the groundwork for our understanding of physics and chemistry, blazing trails in oncology, technology, medicine, and nuclear physics, to name a few. But what did she actually do? Shohini Ghose expounds on some of Marie Skłodowska Curie’s most revolutionary discoveries. Lesson by Shohini Ghose, animation by Anna Nowakowska. yt:video:8RI0JnB_OaE 8RI0JnB_OaE UCsooa4yRKGN_zEE8iknghZA TED-Ed https://www.youtube.com/channel/UCsooa4yRKGN_zEE8iknghZA 2017-06-06T15:00:04+00:00 2017-07-22T07:08:39+00:00 The ferocious predatory dinosaurs of Cretaceous Sahara - Nizar Ibrahim View full lesson: http://ed.ted.com/lessons/the-ferocious-predatory-dinosaurs-of-cretaceous-sahara-nizar-ibrahim In Cretaceous times (around 100 million years ago), North Africa was home to a huge river system and a bizarre menagerie of giant prehistoric predators -- including the Spinosaurus, a dinosaur even more fearsome than the Tyrannosaurus rex. Nizar Ibrahim uses paleontological and geological data to reconstruct this “River of Giants” in surprising detail. Lesson by Nizar Ibrahim, animation by Silvia Prietov.