Plato’s best (and worst) ideas
Lesson duration 04:49
Few individuals have influenced the world and many of today’s thinkers like Plato. He created...
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Lesson duration 04:49
Few individuals have influenced the world and many of today’s thinkers like Plato. He created...
Lesson duration 18:44
Tapping into the findings of his latest book, NYTimes columnist David Brooks unpacks new insights...
Lesson duration 04:40
Imagine you are one of the world’s greatest violin players, and you decide to conduct an...
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Lead is a metallic element that’s distributed across Earth’s crust. When it enters the human...
Lesson duration 05:22
Lead used to be a very common ingredient in many products, and unfortunately it still lingers in...
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A mother and son trek across an endless desert. Wearing special suits to dissipate heat and...
Lesson duration 03:31
From social media to massive financial institutions, we live within a web of networks. But how do...
Lesson duration 02:49
Fourth graders from South Florida share messages with their elected officials about climate...
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Democracy thrives on civil debate, Michael Sandel says -- but we're shamefully out of practice....
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How good are you with money? What about reading people’s emotions? How healthy are you, compared...
Lesson duration 05:52
Today, rats are often regarded as the most successful invasive species in the world. The most...
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In the late 13th century, Osman I established a small principality sandwiched between a crumbling...
Lesson duration 05:59
A mountain separating two lakes. A room papered floor to ceiling with bridal satins. The lid of...
Lesson duration 05:53
In 1815, Mount Tambora erupted and its emissions spread across the globe, blotting out the sun...
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Why does February have 28 days when all the other months get 30 or 31? The answer is part...
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Ray Bradbury’s novel imagines a world where books are banned- and possessing, let alone reading...
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Language is endlessly variable. Each of us can come up with an infinite number of sentences in...
Lesson duration 04:34
Could human civilization eventually spread across the whole Milky Way galaxy? Could we move...