Category: Video Lessons

The World's Most Painful Insect Sting
Science & Technology

The World’s Most Painful Insect Sting

One of these three creatures is thought to possess the world’s most painful insect sting: there’s an ant that forages in rainforest canopies, a bee that protects a hive of delectable honey, and a wasp that paralyzes tarantulas. So which has the nastiest sting? Justin Schmidt describes and ranks the pain inflicted by each insect.

How The Food You Eat Affects Your Brain
Health

How The Food You Eat Affects Your Brain

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.

Can You Outsmart A Troll?
Thinking, Learning, & Solving

Can You Outsmart A Troll?

Your town is holding a mayoral election and the stakes have never been higher. You suspect one of the candidates will begin pushing false information to swing the election. As the cybersecurity expert, your job is to inoculate the townspeople against false information. First, you must learn the strategies of disinformation trolls. Claire Wardle explores the tactics of disinformation campaigns.

What Would Happen If You Didn't Drink Water?
Health

What Would Happen If You Didn’t Drink Water?

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.

What Are Those Floaty Things In Your Eye?
Health

What Are Those Floaty Things In Your Eye?

Sometimes, against a uniform, bright background such as a clear sky or a blank computer screen, you might see things floating across your field of vision. What are these moving objects, and how are you seeing them? Michael Mauser explains the visual phenomenon that is floaters.

How To Improve Your Critical Thinking
Thinking, Learning, & Solving

How To Improve Your Critical Thinking

Socrates, one of the founding fathers of Western philosophical thought, was on trial. Many believed he was an enemy of the state, accusing the philosopher of corrupting the youth and refusing to recognize their gods. But Socrates wasn’t feared for claiming to have all the answers, but rather, for asking too many questions. Erick Wilberding digs into the technique known as the Socratic Method, which uses questions to examine a person’s values, principles, and beliefs.

The Five Major World Religions
Religion

The Five Major World Religions

It’s perfectly human to grapple with questions, like ‘Where do we come from?’ and ‘How do I live a life of meaning?’ These existential questions are central to the five major world religions — and that’s not all that connects these faiths. John Bellaimey explains the intertwined histories and cultures of Hinduism, Judaism, Buddhism, Christianity, and Islam.

Does Grammar Matter?
English Language Learning

Does Grammar Matter?

It can be hard sometimes, when speaking, to remember all of the grammatical rules that guide us when we’re writing. When is it right to say “the dog and me” and when should it be “the dog and I”? Does it even matter?

Where Did English Come From?
English Language Learning

Where Did English Come From?

When we talk about ‘English’, we often think of it as a single language. But what do the dialects spoken in dozens of countries around the world have in common with each other, or with the writings of Chaucer? Claire Bowern traces the language from the present day back to its ancient roots, showing how English has evolved through generations of speakers.

The History Of The Ukraine-Russia Crisis Explained
Social Studies

The History Of The Ukraine-Russia Crisis Explained

The story of the Ukraine-Russia crisis does not begin in 2022 or 2014— it begins in the 9th century. There was a time when the two countries were one. Explore a brief history of Russian control and the ongoing fight for Ukrainian independence.

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