Season 3 · Episode 2 — Royalty

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

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…

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…

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 do…

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

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

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 ho…

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, ins…

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

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 som…

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

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