Ann Johnson Prum

Go deep into the woods to explore the lives of a unique avian family. Woodpeckers come in 239 species and live on every continent except Antarctica and Australia, playing a powerful role in every ecosystem they inhabit. They come in all shapes and sizes, each uniquely engineered for their particular lifestyles.

An exploration of the diversity of moths and butterflies from caterpillars to larvae to chrysalis to winged flight. The documentary covers camouflage and other anti-predatory tactics along with uniqueness of different species and amazing feats and colors.

Ducks are true originals. There are more than 120 different species of ducks in all, a fantastical group of complex characters. Ducks have a talent for survival, and life stories filled with personality and charm. Each bird is more fun than the last, and will leave you wanting more.

Twenty years ago, a young American hiker named Chris McCandless, the accomplished son of successful middle class parents, was found dead in an abandoned bus in the Alaskan wilderness and became the subject of the best-selling book and movie “Into the Wild.” Now, PBS retraces Chris McCandless’ steps to try to piece together why he severed all ties with his past, burnt or gave away all his money, changed his name and headed into the Denali Wilderness. McCandless' own letters, released for the first time, as well as new and surprising interviews, probe the mystery that still lies at the heart of a story that has become part of the American literary canon and compels so many to this day.

Hummingbirds are the tiniest of birds, yet they are some of the toughest, most energetic creatures on the planet. Their unique flying abilities give them unmatched maneuverability, but at the cost of a supercharged metabolism that keeps them on the edge of survival. Hummingbirds spend most their lives in fast forward, but now high-speed video lets us enter their world.

In a remote region on the Pacific coast of Costa Rica, a lush landscape characterized by volcanoes meets tropical dry forest. Right there is a very special beach where two completely different species meet: sea turtles and jaguars. This has spectacular consequences for both sides and their environment. The two animals form an alliance that is as surprising as it is unintentional. The predator suddenly becomes a protector.

Go deep into the woods to explore the lives of a unique avian family. Woodpeckers come in 239 species and live on every continent except Antarctica and Australia, playing a powerful role in every ecosystem they inhabit. They come in all shapes and sizes, each uniquely engineered for their particular lifestyles.

An exploration of the diversity of moths and butterflies from caterpillars to larvae to chrysalis to winged flight. The documentary covers camouflage and other anti-predatory tactics along with uniqueness of different species and amazing feats and colors.

An exploration of the diversity of moths and butterflies from caterpillars to larvae to chrysalis to winged flight. The documentary covers camouflage and other anti-predatory tactics along with uniqueness of different species and amazing feats and colors.

Ducks are true originals. There are more than 120 different species of ducks in all, a fantastical group of complex characters. Ducks have a talent for survival, and life stories filled with personality and charm. Each bird is more fun than the last, and will leave you wanting more.

Twenty years ago, a young American hiker named Chris McCandless, the accomplished son of successful middle class parents, was found dead in an abandoned bus in the Alaskan wilderness and became the subject of the best-selling book and movie “Into the Wild.” Now, PBS retraces Chris McCandless’ steps to try to piece together why he severed all ties with his past, burnt or gave away all his money, changed his name and headed into the Denali Wilderness. McCandless' own letters, released for the first time, as well as new and surprising interviews, probe the mystery that still lies at the heart of a story that has become part of the American literary canon and compels so many to this day.

Twenty years ago, a young American hiker named Chris McCandless, the accomplished son of successful middle class parents, was found dead in an abandoned bus in the Alaskan wilderness and became the subject of the best-selling book and movie “Into the Wild.” Now, PBS retraces Chris McCandless’ steps to try to piece together why he severed all ties with his past, burnt or gave away all his money, changed his name and headed into the Denali Wilderness. McCandless' own letters, released for the first time, as well as new and surprising interviews, probe the mystery that still lies at the heart of a story that has become part of the American literary canon and compels so many to this day.

Twenty years ago, a young American hiker named Chris McCandless, the accomplished son of successful middle class parents, was found dead in an abandoned bus in the Alaskan wilderness and became the subject of the best-selling book and movie “Into the Wild.” Now, PBS retraces Chris McCandless’ steps to try to piece together why he severed all ties with his past, burnt or gave away all his money, changed his name and headed into the Denali Wilderness. McCandless' own letters, released for the first time, as well as new and surprising interviews, probe the mystery that still lies at the heart of a story that has become part of the American literary canon and compels so many to this day.

Hummingbirds are the tiniest of birds, yet they are some of the toughest, most energetic creatures on the planet. Their unique flying abilities give them unmatched maneuverability, but at the cost of a supercharged metabolism that keeps them on the edge of survival. Hummingbirds spend most their lives in fast forward, but now high-speed video lets us enter their world.

In a remote region on the Pacific coast of Costa Rica, a lush landscape characterized by volcanoes meets tropical dry forest. Right there is a very special beach where two completely different species meet: sea turtles and jaguars. This has spectacular consequences for both sides and their environment. The two animals form an alliance that is as surprising as it is unintentional. The predator suddenly becomes a protector.

By some measures, it’s a tiny country, just .03% of the Earth’s landmass. But when it comes to wildlife, Costa Rica is an ecological giant, bursting with a density of species and diverse habitats unparalleled anywhere else in the world.

By some measures, it’s a tiny country, just .03% of the Earth’s landmass. But when it comes to wildlife, Costa Rica is an ecological giant, bursting with a density of species and diverse habitats unparalleled anywhere else in the world.

Costa Rica's motto is Pura Vida - Pure Life - and this deceptively small country is bursting with some of the most spectacular wildlife and pristine ecosystems in the world. All this diversity thrives, in part, thanks to one surprising little creature: hummingbirds. Venture across Costa Rica's wild and rugged landscapes, from volcanic peaks to coastal jungle to misty cloud forests and discover the nation's dazzling diversity of hummingbirds. Watch how these tiny birds play an outsize role in maintaining some of the richest and wildest environments on Earth, where a whole community of creatures, such as macaws and monkeys, enjoys The Hummingbird Effect.