History
The philosophy of Stoicism
Lesson duration 05:30
What is the best life we can live? How can we cope with whatever the universe throws at us and...
Results for "Free courses" (20)
Technology
Four principles for the open world - Don Tapscott
Lesson duration 17:51
The recent generations have been bathed in connecting technology from birth, says futurist Don...
Science & Technology
What happens when your DNA is damaged?
Lesson duration 04:59
The DNA in just one of your cells gets damaged tens of thousands of times per day. Because DNA...
Business & Economics
What causes economic bubbles?
Lesson duration 04:17
During the 1600’s, the exotic tulip became a nationwide sensation; some single bulbs even sold...
Technology
Einstein's miracle year
Lesson duration 05:16
As the year 1905 began, Albert Einstein faced life as a “failed” academic. Yet within the next...
Health
How to stay calm under pressure
Lesson duration 04:29
Your favorite athlete closes in for a win; the crowd holds its breath, and at the crucial moment...
Psychology
What causes panic attacks, and how can you prevent them?
Lesson duration 05:23
Countless poets and writers have tried to put words to the experience of a panic attack— a...
Literature & Language
What do all languages have in common?
Lesson duration 05:19
Language is endlessly variable. Each of us can come up with an infinite number of sentences in...
Civics
The lost art of democratic debate - Michael Sandel
Lesson duration 19:43
Democracy thrives on civil debate, Michael Sandel says -- but we're shamefully out of practice....
Design, Engineering & Technology
Why do buildings fall in earthquakes?
Lesson duration 04:51
Earthquakes have always been a terrifying phenomenon, and they’ve become more deadly as our...
Science & Technology
What triggers a chemical reaction?
Lesson duration 03:46
Chemicals are in everything we see, and the reactions between them can look like anything from...
Social Studies
A day in the life of a teenager in medieval Baghdad
Lesson duration 04:46
It’s 791 CE. As the morning sun shines on the Golden Gate Palace, brother and sister Hisham and...
Social Studies
The rise and fall of the medieval Islamic Empire
Lesson duration 05:06
In the 7th century CE, the prophet Muhammad united the people of the Arabian Peninsula through...
Science & Technology
Are you more likely to explode or freeze in space?
Lesson duration 04:56
Imagine a scientist who has teleported to space. His spacesuit’s pressurized air protects his...
Psychology
The infamous JoJo thought experiment
Lesson duration 05:57
Jo the First is a ruthless dictator who rules with an iron fist. To most onlookers, his rule...
Science & Technology
What happens when the Arctic permafrost melts?
Lesson duration 05:58
In June 2022, a gold miner in the Canadian Yukon made a remarkable discovery. While working on...
Geography
How much of human history is on the bottom of the ocean?
Lesson duration 04:46
Sunken relics, ghostly shipwrecks, and lost cities aren’t just wonders found in fictional...
Literature & Language
How (and why) to read William Faulkner
Lesson duration 04:41
William Faulkner is considered one of America’s most remarkable and perplexing writers. He...