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E1 Cults
How do cults lure people in and exert control? Learn a cult’s telltale signs, and how loneliness and life online makes indoctrination easier than ever.
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E2 Billionaires
There are more billionaires than ever. But how does this vast accumulation of wealth affect the world? Mark Cuban and Bernie Sanders offer insights.
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E3 Animal Intelligence
What goes on inside an animal's mind? Figuring out how they think and feel might just be the key to understanding our own place in the world.
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E4 Athleisure
It began with bloomers. Then came spandex. Now we sport leggings and other activewear everywhere. How did comfy, casual clothing go mainstream?
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E5 Coding
Computer code now controls how we live. But how did these programming languages evolve? And how can they be used to build a new and better world?
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E6 Pirates
In pop culture, pirates are often depicted as booty-looting rogues, but their history is far more complicated. See how they became enemies of humanity.
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E7 The Next Pandemic
If you're not worried about a looming global pandemic, you probably should be. Are we prepared for an outbreak? Bill Gates and other experts weigh in.
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E8 The Future of Meat
The planet's current rate of meat consumption is unprecedented -- and becoming unsustainable. In the future, will meat alternatives be the answer?
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E9 Beauty
Beauty may be in the eye of the beholder, but what exactly makes things such as art and architecture aesthetically pleasing, and why do we like looking?
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E10 Diamonds
A diamond is forever. But why is that? Dig into how these mined pieces of carbon became both a status symbol and a sparkly sign of everlasting love.