Constant Wonder - Season 2

When Rachel Graham experienced a real-life sharknado on a dive trip, she knew her future was connected to these amazing and threatened creatures.

What good is a library or a museum if you can't get to it?

A belief in elves–or in the possibility of elves–could change the way we care for our planet.

National Geographic's Ann Williams has been an eyewitness to some of the greatest archaeological treasures of the last century.

When Korean adoptee Sara Jones went looking for her birth family, she wondered if a strange tattoo given to her in childhood could unlock any secrets.

This pediatric neurosurgeon has saved the lives of countless children–from fetuses in the womb to teenagers. Here are their stories.

A young Black boy from Baltimore survived childhood neglect to become a professional tuba player.

Credit isn't always given where credit is due.

Freedom House is on the way!

Joseph Mikulec walked six continents to fill his enormous autograph book.

When taking a selfie with the dead is an act of love. And, exploring the fabrics of funerals around the world.

In some semi-arid regions of Africa, there is a forest underground, just waiting to sprout.

Bees and butterflies can bring a safari to your yard, if you give them a chance.

After the Camp Fire consumed the town of Paradise, CA, the high school football team played a special role in bringing the town back to life.

We've mined our archives for breathtaking adventure stories.

The ocean uses photosynthesis in powerful ways that we can harness to combat climate change.

Battles in the wild are what ultimately keeps the peace.

It's a dog-eat-dog world, and that's probably for the best.

A true national anthem isn't set by law: it's chosen by the people and often emerges out of conflict.

Hydroponically grown foods may feed a space colony one day.

One man's quest to save Civil War-era photos and uncover the lives they documented.

Clippings of Washington's hair were, for some, like a "selfie." For others, they were used to claim racial superiority.

Would you really want to inherit a castle?

We can work ourselves into a quandary, sometimes hilariously so, when we try to rationalize our relationships with animals.

With courage and humor, this scientist searches for superplants that can defeat superbugs. For her, it's personal.

Do birds and other animals make and enjoy music? For pleasure?

These animal superheroes will remind you how amazing your human body is.

Kwane Stewart cares for the pets of the homeless. And blesses human lives in the process.

Mockingbirds learn hundreds of songs and manipulate them with stunning sophistication. Why?

When Romans put down a Judean rebellion in 73 AD, they also extinguished the Judean date palm. Two thousand years later, an unlikely pair of scientists brought the species back to life.