Watch Explained full season and episodes now

WATCH FREE FOR 30 DAYS

All Prime Video
Cancel anytime

Watch Now

Seasons & Episodes

EP1 Sugar Jul 16, 2021

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?

EP2 Royalty Jul 23, 2021

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.

EP3 Flags Jul 30, 2021

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.

EP4 Dogs Aug 06, 2021

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.

EP5 The End of Oil Aug 13, 2021

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?

EP6 Chess Aug 20, 2021

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?

EP7 Your Skin Aug 27, 2021

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.

EP8 Apologies Sep 03, 2021

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?

EP9 Hurricanes Sep 10, 2021

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

EP10 Plastic Surgery Sep 17, 2021

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

EP11 Dance Crazes Sep 24, 2021

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