Is human evolution speeding up or slowing down?
Lesson duration 05:48
In the past 3,000 years, many populations have evolved genetic adaptations to their local...
Lesson duration 05:48
In the past 3,000 years, many populations have evolved genetic adaptations to their local...
Lesson duration 06:13
Albert Camus grew up surrounded by violence. His homeland of Algeria was mired in conflict. He...
Lesson duration 07:11
The United States often touts itself as a "nation of immigrants," but this obscures the real...
Lesson duration 02:11
As Alice wanders through the dreamscape of Looking-Glass Land in Lewis Carroll's "Through the...
Lesson duration 05:34
The year is 432 BCE. As dawn breaks over Athens, Pheidias is late for work. He is the chief...
Lesson duration 05:00
In ancient Kyoto, a Shinto scholar found himself distracted from his prayers and sought to...
Lesson duration 18:23
Author and historian Yuval Noah Harari explains the important difference between fascism and...
Lesson duration 05:34
For centuries, billiard balls were made of ivory from elephant tusks. But when excessive hunting...
Lesson duration 12:26
At some point in our lives, almost every one of us will have our heart broken. Psychologist Guy...
Lesson duration 05:18
In a 1990’s study, participants recalled getting lost in a shopping mall as children. Some shared...
Lesson duration 05:16
In 1901, David Hänig published research that led to what we know today as the taste map: an...
Lesson duration 06:00
It’s your first day at Magnificent Marigold’s Magical Macademy. But before you can learn your...
Lesson duration 05:47
We think of fish as completely aquatic animals. But there are actually hundreds of fish species...
Lesson duration 21:08
Were you the favorite child, the wild child or the middle child? Jeffrey Kluger explores the...
Lesson duration 05:45
Two perfectly rational gingerbread men, Crispy and Chewy, are out strolling when they’re caught...
Lesson duration 05:22
From 2016 to 2019, the world saw record-breaking heat waves, rampant wildfires, and the longest...
Lesson duration 04:43
What we call language is something more specific than communication. Language is about sharing...
Lesson duration 06:22
In many democratic countries, charismatic leaders vilify political opponents, disparage...
Lesson duration 06:21
For most of the year, the Gulf of Mexico is teeming with marine life, from tiny crustaceans to...
Lesson duration 05:39
Tinnitus has been bothering humanity since Ancient Babylon, plaguing everyone from Leonardo da...
Lesson duration 15:14
What's the best way to get people to change their behavior? In this funny, information-packed...
Lesson duration 05:32
In the savannahs of Kenya, two female northern white rhinos, Nájin and Fatu, munch contentedly on...
Lesson duration 05:49
You’re the chief advisor to an eccentric king who needs to declare his successor. He wants his...
Lesson duration 05:31
It’s 1843, and a debate is raging about one of the most common killers of women: childbed fever—...