Why plague doctors wore beaked masks

From TED Ed. Explore the history of the European plague doctor, and find out where their iconic outfit of a beaked mask and robe came from. — The year is 1656. Your body is wracked by violent chills. Your head pounds and you’re too weak to sit up. In your feverish state, you see a…

4 things all great listeners know

From TED Ed. Dig into different strategies that can improve your listening skills so you can become a high quality listener. — It’s easy to tell when someone’s not paying attention, but it can be surprisingly tricky to know what good listening looks like. Good listening is one of the most important things we can…

Lesson 1: What are ideas?

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. This video – the first in the series – is available for free. If you’d like to continue on this learning journey, you…

Lesson 10: How to artfully reveal your ideas

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 10 Learning Goals: Learn how to reveal your ideas in exciting and engaging ways. What You Will Learn: You’ll learn how to…

Lesson 9: How to be persuasive

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 9 Learning Goals: Learn persuasion techniques that, if used properly and ethically, will help more people understand and embrace your ideas. What…

Lesson 8: How to explain complex ideas

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 8 Learning Goal: Learn how to clearly explain your ideas. What You Will Learn: You’ll learn how to express complex ideas with…

Lesson 7: How to tell compelling stories

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 7 Learning Goal: Learn how to use (and how not to use) personal stories to enhance your talk. What You Will Learn:…

Lesson 6: How to connect with your audience

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 6 Learning Goals: Master skills that will help you establish a strong connection with live and online audiences. What You Will Learn:…

Lesson 5: How to find your voice

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 5 Learning Goals: Learn how to use your voice and body language to enhance the delivery of your talk. What You Will…

Lesson 4: How to craft your presentation plan

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 4 Learning Goals: Determine which preparation approach is best for you and your idea What You Will Learn: In this lesson, you’ll…

Lesson 3: What is your throughline?

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 3 Learning Goal: Pick the main idea for your talk, and work to express it as a throughline. What You Will Learn:…

Lesson 2: What are your ideas?

From TED Ed. Master the skills of TED speakers with TED’s official public speaking course. This course will teach you how to identify, develop and share your best ideas with the world. Lesson 2 Learning Goal: Create a short, prioritized list of your ideas. What You Will Learn: In this lesson, you’ll engage in a…

How do oysters make pearls? – Rob Ulrich

From TED Ed. Explore how oysters use calcium carbonate to create pearls, and how this chemical compound creates a vast array of other materials. — Despite their iridescent colors and smooth shapes, pearls are actually made of the exact same material as the craggy shell that surrounds them. Pearls, urchin spines, the shells of mussels,…

Will there be another pandemic in your lifetime?

From TED Ed. Explore the probability of a future pandemic and the steps we can take to reduce its destructiveness. — We tend to think of pandemics as unlikely events, but disease outbreaks are surprisingly common. Over the past 400 years, the longest stretch of time without a documented outbreak was just four years. So,…

How do we determine the value of a life? – Rebecca L. Walker

From TED Ed. Puzzle through a classic ethical dilemma and decide: how do we determine the value of a life, whether human or non-human? — To protect against a possible resurgence of smallpox, the US government is funding research to improve treatments and vaccines. And since it’s unethical to expose people to a highly lethal…

Could one vaccine protect against everything?

From TED Ed. Explore how scientists are developing a flu vaccine that would protect you against every strain— even ones that don’t exist yet. — There’s a vaccine being developed now that would protect you against every strain of the flu— even ones that don’t exist yet. But influenza is constantly mutating, so is a…

Is capitalism actually broken?

From TED Ed. Explore the different types of capitalism, how they operate, and how they impact issues like climate change and rising inequality. — People have become increasingly worried that the threats we face today, like climate change and rising inequality, can’t be solved by a capitalist economic system. So, is that true? And if…

Why you procrastinate even when it feels bad

From TED Ed. Explore what happens in the brain to trigger procrastination, and what strategies you can use to break the cycle of this harmful practice. — The report you’ve been putting off is due tomorrow. It’s time to buckle down, open your computer … and check your phone. Maybe watch your favorite YouTube channel?…

Why is it so hard to cure the common cold?

From TED Ed. Dig into the two main ways we fight the viruses that cause the common cold, and find out if it’s possible to create a cure. — On average, adults catch more than 150 colds throughout their lives. Even with similar symptoms, the cause could be different each time. Common colds are caused…

What’s the smartest age? – Shannon Odell

From TED Ed. At what age are you smartest? Dig into how your brain development affects your skills at different stages of your life. — Tomorrow is the annual Brain Clash — a decathlon of mental challenges, trivia competitions, and puzzles. Amir needs a smart and capable teammate and must choose between three people; all…

Is inequality inevitable?

From TED Ed. Explore how economic inequality can be measured and how it is impacted by different governmental policy choices. — Income and wealth inequality are not new. In fact, economists and historians who have charted economic inequality throughout history haven’t found a single society without it. Which raises a bleak question: is inequality ……

Would you stop dating someone your parents didn’t like?

From TED Ed. Dig into the Romeo and Juliet Effect, which describes the tendency to find someone more desirable when met by parental opposition. — In 1972, psychologists at the University of Colorado surveyed 140 couples to determine whether a relationship facing parental disapproval was more likely to strengthen or crumble under the pressure. Can…

The myth of Pegasus and the chimera – Iseult Gillespie

From TED Ed. Discover the myth of Bellerophon, the hero who battled and killed the Chimera monster atop the winged horse Pegasus. — Shielded from the gorgon’s stone gaze, Perseus crept through Medusa’s cave. When he reached her, he drew his sickle and brought it down on her neck. From Medusa’s neck sprung two children.…

Is it possible to lose weight fast? – Hei Man Chan

From TED Ed. Is it possible to lose weight fast— in a healthy way? Dig into how different forms of dieting affect your body. — In the wealthiest circles of Victorian England, dieters would swallow an unhatched tapeworm and let it grow inside them by consuming undigested meals. And while modern fad diets aren’t usually…

These companies with no CEO are thriving

From TED Ed. Get to know the different kinds of co-ops, how they work, and how they differ from traditional companies. — Co-ops are a big part of the global economy: they employ 10% of the world’s workforce and over two trillion dollars flow through their doors every year. At a co-op, there’s no single…

How friendship affects your brain – Shannon Odell

From TED Ed. Dig into what happens to your brain during adolescence that changes how you value, understand, and connect to friends. — If it seems like friendships formed in adolescence are particularly special, that’s because they are. Childhood, adolescent, and adult friendships all manifest differently in part because the brain works in different ways…

The myth of Zeus’ test – Iseult Gillespie

From TED Ed. Dig into the myth of Baucis and Philemon, a couple who unknowingly showed the gods hospitality after their neighbors refused. — It was dark when two mysterious, shrouded figures appeared in a hillside village. The strangers knocked on every door in town, asking for food and shelter. But, again and again, they…

The benefits of daydreaming – Elizabeth Cox

From TED Ed. Enter the mind of a bored teenager to discover what happens in the brain when we daydream and find out what purpose it serves. — On a daily basis, you spend between a third and half of your waking hours daydreaming. That may sound like a huge waste of time, but scientists…

Do you have what it takes to freelance?

From TED Ed. Explore the benefits and drawbacks of the gig economy, and find out the key factors of becoming a successful freelancer. — A 2016 survey of freelancers in six countries found that those who freelance by choice– 70% of respondents– were happier than people in traditional jobs, specifically when it came to things…

Would you pass the wallet test?

From TED Ed. Dig into the experiment known as the lost wallet test, and find out the surprising results of this study of honesty. — Picture this: you’re working a shift in a hotel lobby when someone approaches the front desk. They found a lost wallet around the corner, but they’re in a rush and…

Can the economy grow forever?

From TED Ed. Is infinite economic growth possible on a planet with finite resources? Explore how countries can balance efficiency with sustainability. — Many economists think that an eternally growing economy is necessary to keep improving people’s lives, and that if the global economy stops growing, people would fight more over the fixed amount of…

Can you guess what’s wrong with these paintings? – Noah Charney

From TED Ed. Discover the scientific process art conservators use to restore centuries-old paintings and fix the damage of past restorations. — Prior to the mid-20th century, art restorers took a heavy-handed approach, often drastically altering paintings in the name of “improving” art. Today, they focus on keeping the original work intact with minimal intervention,…

A brief history of Spanish – Ilan Stavans

From TED Ed. Trace the history and evolution of the Spanish language, from its origins in the 3rd century BCE to modern day. — Beginning in the third century BCE, the Romans conquered the Iberian peninsula. This period gave rise to several regional languages in the area that’s now Spain, including Castilian, Catalan, and Galician.…

The true cost of gold – Lyla Latif

From TED Ed. Dig into how foreign corporations exploit African nations like Mali for their gold mining, and often rob them of proper compensation. — In 2020, Mali produced over 71 tons of gold— an amount worth billions of dollars. But Mali saw only $850 million dollars from that gold. And this situation isn’t unique:…

The 4 greatest threats to the survival of humanity

From TED Ed. Dig into the 4 biggest existential risks that threaten the survival of humanity, and explore how we can safeguard our future. — With the invention of the atomic bomb, humanity gained the power to destroy itself for the first time in our history. Since then, our risk of either extinction or the…

How does alcohol cause hangovers? – Judy Grisel

From TED Ed. Discover how alcohol impacts your body’s processes and causes hangovers, and find out what causes the most common hangover symptoms. — The molecule responsible for hangovers is ethanol, which we colloquially refer to as alcohol. Ethanol is present in all alcoholic beverages, and generally speaking, the more ethanol, the greater the potential…

What’s the best country to live in?

From TED Ed. Discover the shortcomings of using GDP to measure a country’s well-being, and what alternatives can be used to gauge quality of life. — What’s the best country to live in? Is it the one with the best food? The longest life expectancy? The best weather? For the past 70 years, most governments…

How high altitude affects your body – Andrew Lovering

From TED Ed. Explore what happens in your body when you don’t acclimate to higher altitudes and the dangers of altitude sickness. — If you teleported from sea level to the top of Mount Everest, things would go bad fast. At an altitude of 8,848 meters, you would likely suffocate in minutes. However, for people…

Why can parrots talk? – Grace Smith-Vidaurre and Tim Wright

From TED Ed. Explore the specialized anatomy that allows parrots to talk, scream, curse, and recite facts like humans. — Whether they’re belting Beyoncé, head-banging to classic rock, or rattling off curse words at zoo-goers, parrots are constantly astounding us. They are among the only animals that produce human speech, and some parrots do it…

A brief history of dumplings – Miranda Brown

From TED Ed. Trace the diverse and delicious history of dumplings, from their first recorded origins to their spread across the Asian continent and beyond. — As archaeologists pored over ancient tombs in western China, they discovered some surprisingly well-preserved and familiar relics. Though hardened over 1,000 years, there sat little crescent-shaped dumplings. So who…

What is the rarest color in nature? – Victoria Hwang

From TED Ed. Discover what colors are the most rare to see in nature, and how physics and evolution drive their scarcity. — Plants, animals, or minerals found in nature bear almost every color imaginable. There are two factors that influence what hues you see in the wild: physics and evolution. So, which colors are…