cave paintings

Why Werner Herzog Is Awe-Struck

Audio

Renowned filmmaker Werner Herzog was awe-struck when he saw the Chauvet cave paintings dating back 32,000 years. "You can see clearly that this is the beginning of modern man," he says.More

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Chess, A Perfect Game for Crushing Your Opponent’s Ego

chess fight
Articles

Chess has a reputation as a highly-intelligent, elegant game. But sportswriter Brin-Jonathan Butler says it’s also addictive — and sadistic.

Length: 
11:30

Why We Descend Into Darkness

Underground
Articles

Robert Macfarlane spent a decade exploring caves, mines, catacombs and sewers, on a quest to discover the deep underground. He found a subterranean world of wonder and horror.

Length: 
17:35

Sandhill Cranes Make The Long Journey South

Greg Dixon (Photo copyright gregdixonphoto.com)
Photo Gallery

Thousands of sandhill cranes gather each fall on the banks of the Wisconsin River before they head south for the winter. Anne and Steve visited the Aldo Leopold Foundation in Baraboo, Wisconsin to witness this migration firsthand, along with their guide: wildlife ecologist Stan Temple.

Length: 
06:55

The Greatest Navigators on the Planet

Photos courtesy of the Aldo Leopold Foundation
Articles

David Barrie is fascinated by how animals find their way. How do they travel thousands of miles across oceans or continents, to a place they've never been, without any other creature to show them the way?

Length: 
11:25

Picking Up The Pieces Of Mahjong

Mahjong tiles
Interactive

Board games are a tradition for a lot of us. But have you ever thought about where those traditions come from? Producer Angelo Bautista investigates the history of mahjong.

Length: 
22:56

The High Costs — And Potential Gains — Of Migration, Both Animal And Human

The Maasai have lived alongside the Serengeti wildlife for generations.
Articles

Science journalist Sonia Shah, herself the child of Indian immigrants, has long been fascinated with the way animals, people and even microbes move. Speaking with "To The Best Of Our Knowledge," she says migration is both a crisis and an opportunity.

Length: 
09:30

The Serengeti's Great Migration, Up Close

We came over one hill and saw hundreds of zebras.
Photo Gallery

Imagine driving over a hill and seeing hundreds of zebras or a thousand wildebeest. Anne and Steve were lucky enough to witness this spectacle in the Serengeti. Their expert guide, Moses Augustino Kumburu, describes the Great Migration.

Length: 
09:20

Why Do Animals Migrate?

A herd of topi.
Audio

The fact that so many animals migrate — sometimes thousands of miles — has puzzled people over the ages. Why do they take such risky journeys? Conservation biologist David Wilcove studies migration, and he says the scale of migration is staggering.

Length: 
10:10