TED-Ed مطالب

TED-Ed مطالب

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TED-Ed’s mission is to create lessons worth sharing. Feed and expand your curiosity with our award-winning animated shorts - published on YouTube and available with supplemental learning materials on ed.ted.com.

25 قسمت
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قسمت‌های پادکست

Why don’t we get our drinking water from the ocean? - Manish Kumar
1

Explore how seawater desalination methods transform saltwater into potable freshwater, and what drawbacks this technology has. -- Humans have been transforming seawater into potable freshwater for millennia. Today, billions of people can’t access clean drinking water, and 87 different countries are projected to be “water-scarce” by 2050 ...

5 signs you’re a good driver - Iseult Gillespie
2

Take a turn behind the wheel to discover 5 helpful and simple tips to improve your driving and build confidence in your skills. -- As one of the agency’s best employees, you’ve been selected as a finalist to take on a new top-secret mission. You’ve already shown your aptitude for surveillance and disguise, but the agency’s looking to ...

This is the most common way to get head lice - Nazzy Pakpour
3

Dig into what makes head lice so difficult to get rid of, and the effectiveness of our most common treatments. -- For as long as humans have had lice, we’ve fought hard to get rid of them. Nit combs, the fine-tooth brushes used to remove lice and their sticky eggs, have been found among the ancient remains of cultures across the globe. Toda ...

The best invention since sliced bread? - Rachel Yang
4

Dig into the science of thermal batteries, and how this technology can generate heat more efficiently than fossil fuels. -- Industrial manufacturers spend a huge amount of energy generating heat to make everyday materials and objects, like cement, steel, and paper. And since most companies use fossil fuels to reach these high temperatures, in ...

You might be surprised by what you'd find in your pores - M. Alejandra Perotti
5

Meet the microscopic arachnids that live on your face, and find out why Demodex mites are part of the human microbiome. -- Two species of Demodex mites specifically inhabit human follicles. And not just some people’s— nearly everyone is thought to host mites. One person’s face might harbor hundreds or even thousands of individual mites. ...

Which species would you get rid of? | Ada, Ep. 5
6

Ada imagines how eradicating invasive species would impact our ecosystems. Who decides which species, and how many are too many? -- This is episode 5 of the animated series, “Ada.” This 5-episode narrative follows the young library assistant Ada as she juggles two worlds: her daily mundane reality and the future she vividly imagines for a ...

How are microchips made? - George Zaidan and Sajan Saini
7

Travel into a computer chip to explore how these devices are manufactured and what can be done about their environmental impact. -- Globally, we produce more than a trillion computer chips every year. Which means about 20 trillion transistors are built every second— and this process is done in fewer than 500 fabrication plants. How do we bu ...

The tale of the brothers who outwitted the demon queen - Malay Bera
8

Dig into the Bengali tale of brothers Neelkamal and Lalkamal, two princes seeking to end the reign of demons in their kingdom. -- Achinpur was on the precipice of demonic takeover. A mysterious woman beguiled the king and infiltrated the royal family. But she wasn’t human; under her beautiful façade lurked an insatiable appetite for flesh. ...

Can we actually control superintelligent AI? | Ada, Ep. 4
9

Ada imagines what an AI librarian system could be capable of. What are the consequences of creating superintelligent AI systems? -- This is episode 4 of the animated series, “Ada.” This 5-episode narrative follows the young library assistant Ada as she juggles two worlds: her daily mundane reality and the future she vividly imagines for a ...

Can you "see" images in your mind? Some people can't - Adam Zeman
10

When reading "Alice's Adventures in Wonderland," most readers visualize the queen’s croquet game play out in their heads. A few might see the scene in vivid detail. However, a small fraction of readers have a drastically different experience: within their heads, they "see" absolutely nothing. Why do some people have an inability to visualize imag ...

Should we get rid of pregnancy? | Ada, Ep. 3
11

Ada imagines a life where she could have children without giving birth. Would artificial wombs give us more choice or less? -- This is episode 3 of the animated series, “Ada.” This 5-episode narrative follows the young library assistant Ada as she juggles two worlds: her daily mundane reality and the future she vividly imagines for all hu ...

The myth of Ireland's most infamous love triangle - Iseult Gillespie
12

Dig into the tragic myth of Tristan and Princess Isolde, and how they fall in love despite her being promised to another. -- After witnessing a bird carrying a single golden hair, King Mark of Cornwall declared his future bride must have equally radiant locks. The only royal matching this description was Princess Isolde of Ireland. So the kin ...

Cell vs. virus: A battle for health - Shannon Stiles
13

How does your body fight a virus? Take a look inside your cells to witness how they produce antibodies and fight to keep you healthy. -- All living things are made of cells. In the human body, these highly efficient units are protected by layer upon layer of defense against icky invaders like the cold virus. Shannon Stiles takes a journey int ...

How stress affects your body - Sharon Horesh Bergquist
14

Our hard-wired stress response is designed to gives us the quick burst of heightened alertness and energy needed to perform our best. But stress isn’t all good. When activated too long or too often, stress can damage virtually every part of our body. Sharon Horesh Bergquist gives us a look at what goes on inside our body when we are chronically s ...

How do solar panels work? - Richard Komp
15

The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy. Lesson by Richard Komp, animation by Globizco. ...

The Infinite Hotel Paradox - Jeff Dekofsky
16

The Infinite Hotel, a thought experiment created by German mathematician David Hilbert, is a hotel with an infinite number of rooms. Easy to comprehend, right? Wrong. What if it's completely booked but one person wants to check in? What about 40? Or an infinitely full bus of people? Jeff Dekofsky solves these heady lodging issues using Hilbert's p ...

Can you solve the prisoner hat riddle? - Alex Gendler
17

You and nine other individuals have been captured by super-intelligent alien overlords. The aliens think humans look quite tasty, but their civilization forbids eating highly logical and cooperative beings. Unfortunately, they’re not sure whether you qualify, so they decide to give you all a test. Can you solve this hat riddle? Alex Gendler shows ...

How to make your stress work for you - Shannon Odell
18

Dig into what causes your stress response to be triggered, and how you can best train your mind and body to deal with stress. -- An upcoming project deadline, a fight with a family member, or even an embarrassing moment can easily trigger our body’s stress response. While we can’t always control what life throws at us, there are ways to b ...

Can you solve the bridge riddle? - Alex Gendler
19

Taking that internship in a remote mountain lab might not have been the best idea. Pulling that lever with the skull symbol just to see what it did probably wasn’t so smart either. But now is not the time for regrets because you need to get away from these mutant zombies...fast. Can you use math to get you and your friends over the bridge before ...

What would happen if you didn’t drink water? - Mia Nacamulli
20

Water is essentially everywhere in our world, and the average human is composed of between 55 and 60% water. So what role does water play in our bodies, and how much do we actually need to drink to stay healthy? Mia Nacamulli details the health benefits of hydration. Lesson by Mia Nacamulli, animation by Chris Bishop. ...

What makes muscles grow? - Jeffrey Siegel
21

We have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow. Jeffrey Siegel illustrates how a good mix of sleep, nutrition and exercise keep your muscles as big and strong a ...

The language of lying — Noah Zandan
22

We hear anywhere from 10 to 200 lies a day. And although we’ve spent much of our history coming up with ways to detect these lies by tracking physiological changes in their tellers, these methods have proved unreliable. Is there a more direct approach? Noah Zandan uses some famous examples of lying to illustrate how we might use communications sc ...

Can we actually control superintelligent AI? | Ada, Ep. 4
23

Ada imagines what an AI librarian system could be capable of. What are the consequences of creating superintelligent AI systems? -- This is episode 4 of the animated series, “Ada.” This 5-episode narrative follows the young library assistant Ada as she juggles two worlds: her daily mundane reality and the future she vividly imagines for a ...

How the food you eat affects your brain - Mia Nacamulli
24

When it comes to what you bite, chew and swallow, your choices have a direct and long-lasting effect on the most powerful organ in your body: your brain. So which foods cause you to feel so tired after lunch? Or so restless at night? Mia Nacamulli takes you into the brain to find out. Lesson by Mia Nacamulli, animation by Private Island. ...

How does anesthesia work? - Steven Zheng
25

When under anesthesia, you can’t move, form memories, or — hopefully — feel pain. And while it might just seem like you are asleep for that time, you actually aren’t. What’s going on? Steven Zheng explains what we know about the science behind anesthesia. Lesson by Steven Zheng, animation by Zedem Media. ...