Athleisure
It began with bloomers. Then came spandex. Now we sport leggings and other activewear everywhere. How did comfy, casual clothing go mainstream?
More from Season 2
Episode 1
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.
Episode 2
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.
Episode 3
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.
Episode 5
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?
Episode 6
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.
Episode 7
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.
