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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.

There are more billionaires than ever. But how does this vast accumulation of wealth affect the world? Mark Cuban and Bernie Sanders offer insights.

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.

It began with bloomers. Then came spandex. Now we sport leggings and other activewear everywhere. How did comfy, casual clothing go mainstream?

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?

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.

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.

The planet's current rate of meat consumption is unprecedented -- and becoming unsustainable. In the future, will meat alternatives be the answer?

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?

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.

Once crucial for survival, sugar now poses a health risk. Is there a way to satisfy our primeval craving for sweetness in a healthy, balanced way?

How do monarchies survive when they no longer wield power? By presenting a royal fairy tale that may not reflect the reality of the past — or present.

A flag can unite, divide and terrorize. Explore how a piece of cloth transformed into a powerful symbol of both love and hate, freedom and oppression.

Who's a good dog? They all are! From puppy-dog eyes to feats of heroism, see how canines evolved into humankind's best friends and sources of pure love.

Oil led to huge advancements - and vast inequities. As the planet warms, why is it so hard to turn away from fossil fuels, and can it be done in time?

For centuries, chess has captured hearts and minds — and pawns — and it's more popular than ever. What makes this ever-changing board game so special?

Don’t panic, but our skin plays host to trillions of bacteria, fungi, mites and other microscopic guests. Go beyond skin-deep with our largest organ.

Apologizing is tough, and in this era of public mea culpas, forgiveness isn't guaranteed. What makes for a good apology, and why does it hold such power?

As the planet warms, hurricanes could become even more dangerous and destructive.

The Instagram face. A shapely posterior. Cosmetic surgery can make the latest beauty trends a reality. Explore its origins and effects, inside and out.

From the waltz to voguing, dance crazes have connected people throughout history. But when a dance catches on, who gets the credit — and compensation?

Time flies… sometimes. Its passage can seem to speed up and slow down. Why do we experience time the way we do, and how do we take back some control?

Dirt roads. Pickup trucks. Hip-hop? As the borders around country music shift, who decides what defines the popular genre, and who gets to be a star?

Fairy tales have survived thousands of years for a reason. Explore their far-flung history and how the stories speak to fundamental human concerns.