Crash Course
Theories of Global Stratification: Crash Course Sociology
Today we’ll discuss two theories of global stratification. First, we’ll go over modernization theory and Walt Rostow’s Four Stages of Modernization. Next, we’ll explain dependency theory, the legacy of colonialism, and Immanuel...
TED Talks
Seth Berkley: The troubling reason why vaccines are made too late ... if they're made at all
It seems like we wait for a disastrous disease outbreak before we get serious about making a vaccine for it. Seth Berkley lays out the market realities and unbalanced risks behind why we aren't making vaccines for the world's biggest...
TED Talks
TED: The unexpected challenges of a country's first election | Philippa Neave
How do you teach an entire country how to vote when no one has done it before? It's a huge challenge facing fledgling democracies around the world -- and one of the biggest problems turns out to be a lack of shared language. After all,...
TED Talks
TED: The risky politics of progress | Jonathan Tepperman
Global problems such as terrorism, inequality and political dysfunction aren't easy to solve, but that doesn't mean we should stop trying. In fact, suggests journalist Jonathan Tepperman, we might even want to think riskier. He traveled...
TED Talks
TED: Virtual Choir Live | Eric Whitacre
Composer and conductor Eric Whitacre has inspired millions by bringing together "virtual choirs," singers from many countries spliced together on video. Now, for the first time ever, he creates the experience in real time, as 32 singers...
TED Talks
Michele Wucker: Why we ignore obvious problems -- and how to act on them
Why do we often neglect big problems, like the financial crisis and climate change, until it's too late? Policy strategist Michele Wucker urges us to replace the myth of the "black swan" -- that rare, unforeseeable, unavoidable...
TED Talks
Melissa Fleming: Let's help refugees thrive, not just survive
Today's refugee crisis is the biggest since World War II, and it's growing. When this talk was given, 50 million people had been forcefully displaced from their homes by conflict and war; now the number is 65.3 million. There were 3...
TED Talks
TED: A precise, three-word address for every place on earth | Chris Sheldrick
With what3words, Chris Sheldrick and his team have divided the entire planet into three-meter squares and assigned each a unique, three-word identifier, like famous.splice.writers or blocks.evenly.breed, giving a precise address to the...
SciShow
Why Some Countries Are Delaying COVID Booster Shots
Some countries are planning to wait up to 12 weeks to administer second doses of COVID-19 vaccines. Will this slow the virus?
TED Talks
Vikram Patel: Mental health for all by involving all
Nearly 450 million people are affected by mental illness worldwide. In wealthy nations, just half receive appropriate care, but in developing countries, close to 90 percent go untreated because psychiatrists are in such short supply....
TED Talks
Nicholas Negroponte: One Laptop per Child, two years on
Nicholas Negroponte talks about how One Laptop per Child is doing, two years in. Speaking at the EG conference while the first XO laptops roll off the production line, he recaps the controversies and recommits to the goals of this...
TED Talks
Pankaj Ghemawat: Actually, the world isn't flat
It may seem that we're living in a borderless world where ideas, goods and people flow freely from nation to nation. We're not even close, says Pankaj Ghemawat. With great data (and an eye-opening survey), he argues that there's a delta...
Curated Video
USA vs USSR Fight! The Cold War: Crash Course World History
In which John Green teaches you about the Cold War, which was occasionally hot, but on average, it was just cool. In the sense of its temperature. It was by no means cool, man. After World War II, there were basically two big...
TED Talks
Eva Zeisel: The playful search for beauty
The ceramics designer Eva Zeisel looks back on a 75-year career. What keeps her work as fresh today (her latest line debuted in 2008) as in 1926? Her sense of play and beauty, and her drive for adventure. Listen for stories from a rich,...
TED Talks
Joshua Silver: Adjustable liquid-filled eyeglasses
Josh Silver delivers his brilliantly simple solution for correcting vision at the lowest cost possible -- adjustable, liquid-filled lenses. At TEDGlobal 2009, he demos his affordable eyeglasses and reveals his global plan to distribute...
TED Talks
Charmian Gooch: Meet global corruption's hidden players
When the son of the president of a desperately poor country starts buying mansions and sportscars on an official monthly salary of $7,000, Charmian Gooch suggests, corruption is probably somewhere in the picture. In a blistering,...
TED Talks
TED: Why Africa must become a center of knowledge again | Olufemi Taiwo
How can Africa, the home to some of the largest bodies of water in the world, be said to have a water crisis? It doesn't, says Olufemi Taiwo -- it has a knowledge crisis. Taiwo suggests that lack of knowledge on important topics like...
TED-Ed
TED-Ed: What makes TB the world's most infectious killer? - Melvin Sanicas
Learn why tuberculosis, TB, is the world’s most infectious disease and how medical advancements are improving treatment. -- In 2008, two 9,000-year old skeletons were found with their bones infected by an all too familiar bacterium. The...
TED-Ed
TED-Ed: What if there were 1 trillion more trees? | Jean-François Bastin
Today humanity produces more than 1,400 tons of carbon every minute. To combat climate change, we need to reduce fossil fuel emissions, and draw down excess CO2 to restore the balance of greenhouse gases. Like all plants, trees consume...
TED Talks
TED: Did you hear the one about the Iranian-American? | Maz Jobrani
A founding member of the Axis of Evil Comedy Tour, standup comic Maz Jobrani riffs on the challenges and conflicts of being Iranian-American -- "like, part of me thinks I should have a nuclear program; the other part thinks I can't be...
SciShow
Do eggs go in the fridge or on the counter? #shorts #science
Do eggs go in the fridge or on the counter? #shorts #science
TED Talks
Hans and Ola Rosling: How not to be ignorant about the world
How much do you know about the world? Hans Rosling, with his famous charts of global population, health and income data (and an extra-extra-long pointer), demonstrates that you have a high statistical chance of being quite wrong about...
Crash Course
Economic Systems the Labor Market Crash Course Sociology
This week we’ll see how economies can be broken down into the primary, secondary, and tertiary sectors. We’ll look at the three stages of economic revolution that brought us to the modern post-industrial era. We’ll also explore two types...
TED Talks
TED: The global goals we've made progress on -- and the ones we haven't | Michael Green
We are living in a world that is tantalizingly close to ensuring that no one need die of hunger or malaria or diarrhea, says economist Michael Green. To help spur progress, back in 2015 the United Nations drew up a set of 17 goals around...