A Spinosaurus, the world's largest ever predatory dinosaur, struggles to bring up his babies and lead his young family across one of the deadliest environments on Earth.

Lev and his guide, Kane, journey across the salt pans to track bull elephants, but their safety is soon jeopardized when they encounter a herd during mating season.

Lev and his guide Boston are 1100 miles and four months into their journey, in the world's newest nation, South Sudan; arriving in the capital, Juba, Lev and Boston are arrested by secret police.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicolored pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

A bird is in trouble, but is it wildlife? Spring patients are ready to return to the wild.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

The highest tides in the world are found in the Bay of Fundy on Canada's east coast.

A bird is in trouble, but is it wildlife? Spring patients are ready to return to the wild.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

The highest tides in the world are found in the Bay of Fundy on Canada's east coast.

A bird is in trouble, but is it wildlife? Spring patients are ready to return to the wild.

A journey down Spain's Guadalquivir River, from the high Sierra de Cazorla down to Andalusia; passing through Córdoba and Seville, following the footsteps of Columbus and Magellan.

A Spinosaurus, the world's largest ever predatory dinosaur, struggles to bring up his babies and lead his young family across one of the deadliest environments on Earth.

Lev and his guide, Kane, journey across the salt pans to track bull elephants, but their safety is soon jeopardized when they encounter a herd during mating season.

Lev and his guide Boston are 1100 miles and four months into their journey, in the world's newest nation, South Sudan; arriving in the capital, Juba, Lev and Boston are arrested by secret police.

A Spinosaurus, the world's largest ever predatory dinosaur, struggles to bring up his babies and lead his young family across one of the deadliest environments on Earth.

Lev and his guide, Kane, journey across the salt pans to track bull elephants, but their safety is soon jeopardized when they encounter a herd during mating season.

Lev and his guide Boston are 1100 miles and four months into their journey, in the world's newest nation, South Sudan; arriving in the capital, Juba, Lev and Boston are arrested by secret police.

Head out with a team of intrepid scientists on a daring expedition off Western Australia's Pilbara coast; Slither into the heart of danger with Dr. Ann, who gets too close for comfort to one of the nation's most mysterious and lethal serpents.

Savannah balances the medical needs of animals with the emotional bonds of the owners.

A danger zone in space above the South Atlantic where lights flash and satellites go haywire; astronauts' first-hand accounts.

Alaskans embrace the flowing waters and returning wildlife of spring.

Head out with a team of intrepid scientists on a daring expedition off Western Australia's Pilbara coast; Slither into the heart of danger with Dr. Ann, who gets too close for comfort to one of the nation's most mysterious and lethal serpents.

Savannah balances the medical needs of animals with the emotional bonds of the owners.

A danger zone in space above the South Atlantic where lights flash and satellites go haywire; astronauts' first-hand accounts.

Alaskans embrace the flowing waters and returning wildlife of spring.

A journey down Spain's Guadalquivir River, from the high Sierra de Cazorla down to Andalusia; passing through Córdoba and Seville, following the footsteps of Columbus and Magellan.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

The highest tides in the world are found in the Bay of Fundy on Canada's east coast.

A journey down Spain's Guadalquivir River, from the high Sierra de Cazorla down to Andalusia; passing through Córdoba and Seville, following the footsteps of Columbus and Magellan.

The rehab is abuzz as Hope's open house approaches; a release at the birthplace of hockey goes offside; a deer doesn't want to depart.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Along the west coast of Great Britain, the world's longest uninterrupted footpath forges through more than 800 miles of breathtaking scenery; the diverse landscape of the Welsh coast is a geological treasure.

The rehab is abuzz as Hope's open house approaches; a release at the birthplace of hockey goes offside; a deer doesn't want to depart.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Along the west coast of Great Britain, the world's longest uninterrupted footpath forges through more than 800 miles of breathtaking scenery; the diverse landscape of the Welsh coast is a geological treasure.

The rehab is abuzz as Hope's open house approaches; a release at the birthplace of hockey goes offside; a deer doesn't want to depart.

Discover the stories of six epic river journeys via the fascinating characters who live and work on and around the water.

Head out with a team of intrepid scientists on a daring expedition off Western Australia's Pilbara coast; Slither into the heart of danger with Dr. Ann, who gets too close for comfort to one of the nation's most mysterious and lethal serpents.

Savannah balances the medical needs of animals with the emotional bonds of the owners.

Lev and his guide Boston are 1100 miles and four months into their journey, in the world's newest nation, South Sudan; arriving in the capital, Juba, Lev and Boston are arrested by secret police.

A Spinosaurus, the world's largest ever predatory dinosaur, struggles to bring up his babies and lead his young family across one of the deadliest environments on Earth.

Head out with a team of intrepid scientists on a daring expedition off Western Australia's Pilbara coast; Slither into the heart of danger with Dr. Ann, who gets too close for comfort to one of the nation's most mysterious and lethal serpents.

Savannah balances the medical needs of animals with the emotional bonds of the owners.

A danger zone in space above the South Atlantic where lights flash and satellites go haywire; astronauts' first-hand accounts.

Alaskans embrace the flowing waters and returning wildlife of spring.

In Naples, Dara explores the story of Mount Vesuvius and its 79AD eruption.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

How dramatic twists in Earth's story enabled humans to go from being part of nature to controlling it.

In Naples, Dara explores the story of Mount Vesuvius and its 79AD eruption.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

How dramatic twists in Earth's story enabled humans to go from being part of nature to controlling it.

Discover the stories of six epic river journeys via the fascinating characters who live and work on and around the water.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Along the west coast of Great Britain, the world's longest uninterrupted footpath forges through more than 800 miles of breathtaking scenery; the diverse landscape of the Welsh coast is a geological treasure.

Discover the stories of six epic river journeys via the fascinating characters who live and work on and around the water.

Hope Swinimer rescues, rehabilitates and releases thousands of animals each year, while struggling to make ends meet; she is driven by her compassion and belief that every animal matters.

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

Ireland is small but epic in wonder; surrounded by the Atlantic Ocean, from the Cliffs of Moher to the extraordinary Giant's Causeway, this land has been shaped and reshaped by both the power of water and violent geological forces.

Hope Swinimer rescues, rehabilitates and releases thousands of animals each year, while struggling to make ends meet; she is driven by her compassion and belief that every animal matters.

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

Ireland is small but epic in wonder; surrounded by the Atlantic Ocean, from the Cliffs of Moher to the extraordinary Giant's Causeway, this land has been shaped and reshaped by both the power of water and violent geological forces.

Hope Swinimer rescues, rehabilitates and releases thousands of animals each year, while struggling to make ends meet; she is driven by her compassion and belief that every animal matters.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia-Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

In Naples, Dara explores the story of Mount Vesuvius and its 79AD eruption.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

How dramatic twists in Earth's story enabled humans to go from being part of nature to controlling it.

In Naples, Dara explores the story of Mount Vesuvius and its 79AD eruption.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

How dramatic twists in Earth's story enabled humans to go from being part of nature to controlling it.

Simon looks back on some of the most dangerous situations he's experienced.

Simon Reeve travels through some of the most remote landscapes on Earth in search of the people and the wildlife of the planet's wildernesses.

The second leg of Simon's journey takes him from the fjords of Norway to Iceland, the land of fire and ice.

Simon looks back on some of the most dangerous situations he's experienced.

Simon Reeve travels through some of the most remote landscapes on Earth in search of the people and the wildlife of the planet's wildernesses.

The second leg of Simon's journey takes him from the fjords of Norway to Iceland, the land of fire and ice.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia-Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

Ireland is small but epic in wonder; surrounded by the Atlantic Ocean, from the Cliffs of Moher to the extraordinary Giant's Causeway, this land has been shaped and reshaped by both the power of water and violent geological forces.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia-Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

A rare owl appears ready for release but everyone wonders if it will fly.

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

From the icy peaks of age-old mountain glaciers to the fog-shrouded canopies of Canada's only rainforest, it's the wettest place in North America.

A rare owl appears ready for release but everyone wonders if it will fly.

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

From the icy peaks of age-old mountain glaciers to the fog-shrouded canopies of Canada's only rainforest, it's the wettest place in North America.

A rare owl appears ready for release but everyone wonders if it will fly.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Simon looks back on some of the most dangerous situations he's experienced.

Simon Reeve travels through some of the most remote landscapes on Earth in search of the people and the wildlife of the planet's wildernesses.

The second leg of Simon's journey takes him from the fjords of Norway to Iceland, the land of fire and ice.

Simon looks back on some of the most dangerous situations he's experienced.

Simon Reeve travels through some of the most remote landscapes on Earth in search of the people and the wildlife of the planet's wildernesses.

The second leg of Simon's journey takes him from the fjords of Norway to Iceland, the land of fire and ice.

In 1989, a ferocious explosion on the sun's surface released a cloud of highly charged particles containing the energy of 20 million nuclear bombs, and this solar superstorm then hit Earth; in Quebec, Canada, the lights suddenly went out.

Brian journeys across the solar system and explores its weirdest worlds, the misfits and oddballs; he discovers the forces that sculpted bizarre features and strange phenomena.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

In 1989, a ferocious explosion on the sun's surface released a cloud of highly charged particles containing the energy of 20 million nuclear bombs, and this solar superstorm then hit Earth; in Quebec, Canada, the lights suddenly went out.

Brian journeys across the solar system and explores its weirdest worlds, the misfits and oddballs; he discovers the forces that sculpted bizarre features and strange phenomena.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

From the icy peaks of age-old mountain glaciers to the fog-shrouded canopies of Canada's only rainforest, it's the wettest place in North America.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Two tiny orphans struggle to survive; Hope takes a second swing at a release gone wrong.

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

The jungle, underwater caves and lush everglades of the Yucatán shelter Mexico's largest predator, Morelet's crocodile.

Two tiny orphans struggle to survive; Hope takes a second swing at a release gone wrong.

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

The jungle, underwater caves and lush everglades of the Yucatán shelter Mexico's largest predator, Morelet's crocodile.

Two tiny orphans struggle to survive; Hope takes a second swing at a release gone wrong.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

In 1989, a ferocious explosion on the sun's surface released a cloud of highly charged particles containing the energy of 20 million nuclear bombs, and this solar superstorm then hit Earth; in Quebec, Canada, the lights suddenly went out.

Brian journeys across the solar system and explores its weirdest worlds, the misfits and oddballs; he discovers the forces that sculpted bizarre features and strange phenomena.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

In 1989, a ferocious explosion on the sun's surface released a cloud of highly charged particles containing the energy of 20 million nuclear bombs, and this solar superstorm then hit Earth; in Quebec, Canada, the lights suddenly went out.

Brian journeys across the solar system and explores its weirdest worlds, the misfits and oddballs; he discovers the forces that sculpted bizarre features and strange phenomena.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

Found on every continent, mountains create unique frozen worlds, home to extraordinary animals that must overcome the crushing conditions of the cold.

Professor Brian Cox explores how the universe began and how it will end.

Steve goes on a mission to learn whether the sharks of the Indian Ocean are capable of adapting to rapidly changing conditions like climate change, overfishing, and pollution.

Found on every continent, mountains create unique frozen worlds, home to extraordinary animals that must overcome the crushing conditions of the cold.

Professor Brian Cox explores how the universe began and how it will end.

Steve goes on a mission to learn whether the sharks of the Indian Ocean are capable of adapting to rapidly changing conditions like climate change, overfishing, and pollution.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

The jungle, underwater caves and lush everglades of the Yucatán shelter Mexico's largest predator, Morelet's crocodile.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia-Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

A most unusual fawn arrives on Hope's doorstep; a graveyard is the spooky setting for an unlikely reunion.

Examine mysterious holes in Israel; explore a ghost village hidden in the Colombian jungle, a shipwreck off the coast of Sri Lanka and a gutted airplane fuselage abandoned in Iceland.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

A most unusual fawn arrives on Hope's doorstep; a graveyard is the spooky setting for an unlikely reunion.

Examine mysterious holes in Israel; explore a ghost village hidden in the Colombian jungle, a shipwreck off the coast of Sri Lanka and a gutted airplane fuselage abandoned in Iceland.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

A most unusual fawn arrives on Hope's doorstep; a graveyard is the spooky setting for an unlikely reunion.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

Found on every continent, mountains create unique frozen worlds, home to extraordinary animals that must overcome the crushing conditions of the cold.

Professor Brian Cox explores how the universe began and how it will end.

Steve goes on a mission to learn whether the sharks of the Indian Ocean are capable of adapting to rapidly changing conditions like climate change, overfishing, and pollution.

Found on every continent, mountains create unique frozen worlds, home to extraordinary animals that must overcome the crushing conditions of the cold.

Professor Brian Cox explores how the universe began and how it will end.

Steve goes on a mission to learn whether the sharks of the Indian Ocean are capable of adapting to rapidly changing conditions like climate change, overfishing, and pollution.

Taking an in-depth look at some of most specialized craniofacial surgery in the world.

Leopard Mutima's relationship with her mother is at breaking point, and as the balance of power in Nsefu tips towards the lions, the hyenas and wild dogs fight to raise their young.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

Taking an in-depth look at some of most specialized craniofacial surgery in the world.

Leopard Mutima's relationship with her mother is at breaking point, and as the balance of power in Nsefu tips towards the lions, the hyenas and wild dogs fight to raise their young.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

Examine mysterious holes in Israel; explore a ghost village hidden in the Colombian jungle, a shipwreck off the coast of Sri Lanka and a gutted airplane fuselage abandoned in Iceland.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Two members of Hope's team travel to England to discover new techniques and make allies on the front lines of animal rescue.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

Costa Rica is a world of its own; a tropical corridor squeezed between two great oceans, powered by rivers and volcanoes; its volcanoes erupt and deposit minerals into the soil, making the land fertile and creating the country's rich bio-diversity.

Two members of Hope's team travel to England to discover new techniques and make allies on the front lines of animal rescue.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

Costa Rica is a world of its own; a tropical corridor squeezed between two great oceans, powered by rivers and volcanoes; its volcanoes erupt and deposit minerals into the soil, making the land fertile and creating the country's rich bio-diversity.

Two members of Hope's team travel to England to discover new techniques and make allies on the front lines of animal rescue.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Costa Rica is a world of its own; a tropical corridor squeezed between two great oceans, powered by rivers and volcanoes; its volcanoes erupt and deposit minerals into the soil, making the land fertile and creating the country's rich bio-diversity.

Taking an in-depth look at some of most specialized craniofacial surgery in the world.

Leopard Mutima's relationship with her mother is at breaking point, and as the balance of power in Nsefu tips towards the lions, the hyenas and wild dogs fight to raise their young.

Two members of Hope's team travel to England to discover new techniques and make allies on the front lines of animal rescue.

Taking an in-depth look at some of most specialized craniofacial surgery in the world.

Leopard Mutima's relationship with her mother is at breaking point, and as the balance of power in Nsefu tips towards the lions, the hyenas and wild dogs fight to raise their young.

Pursued by a group of Utahraptors, a gang of armored dinosaurs battles to reach adulthood.

Filmed over 72 days across Africa, this documentary explores the possible extinction of elephants within the next 50 years.

Five months and more than 2000 miles into his journey, Lev is in Sudan, facing his biggest physical obstacle yet: the Sahara desert; he has to walk 1300 miles across one of the most inhospitable places on Earth.

Pursued by a group of Utahraptors, a gang of armored dinosaurs battles to reach adulthood.

Filmed over 72 days across Africa, this documentary explores the possible extinction of elephants within the next 50 years.

Five months and more than 2000 miles into his journey, Lev is in Sudan, facing his biggest physical obstacle yet: the Sahara desert; he has to walk 1300 miles across one of the most inhospitable places on Earth.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

Costa Rica is a world of its own; a tropical corridor squeezed between two great oceans, powered by rivers and volcanoes; its volcanoes erupt and deposit minerals into the soil, making the land fertile and creating the country's rich bio-diversity.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Barry and Hayley's adventure in the UK continues at a rehab center where they use the latest in alternative therapies.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

Iceland is the world's largest volcanic island and new ground is born daily.

Barry and Hayley's adventure in the UK continues at a rehab center where they use the latest in alternative therapies.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

Iceland is the world's largest volcanic island and new ground is born daily.

Barry and Hayley's adventure in the UK continues at a rehab center where they use the latest in alternative therapies.

Meandering through the black waters of a primordial river immortalized in a folk song.

Pursued by a group of Utahraptors, a gang of armored dinosaurs battles to reach adulthood.

Filmed over 72 days across Africa, this documentary explores the possible extinction of elephants within the next 50 years.

Five months and more than 2000 miles into his journey, Lev is in Sudan, facing his biggest physical obstacle yet: the Sahara desert; he has to walk 1300 miles across one of the most inhospitable places on Earth.

Pursued by a group of Utahraptors, a gang of armored dinosaurs battles to reach adulthood.

Filmed over 72 days across Africa, this documentary explores the possible extinction of elephants within the next 50 years.

Five months and more than 2000 miles into his journey, Lev is in Sudan, facing his biggest physical obstacle yet: the Sahara desert; he has to walk 1300 miles across one of the most inhospitable places on Earth.

Dr. Ann Jones ventures into the heart of Borneo's jungle to look for wild orangutan, following a team of dedicated scientists whose work is leading to new insights into one of the world's most intelligent and elusive great apes.

There's a new employee at Rocky Rapids Vet. Clinic, Dr. Dayle Poitras, a newly graduated Métis vet excited about landing her first full-time gig; Savannah is keen to mentor young Dayle while learning about what it means to be Métis.

Professor Brian Cox explores how the universe began and how it will end.

Alaskans must overcome rising waters to capitalize on spring's offerings.

Dr. Ann Jones ventures into the heart of Borneo's jungle to look for wild orangutan, following a team of dedicated scientists whose work is leading to new insights into one of the world's most intelligent and elusive great apes.

There's a new employee at Rocky Rapids Vet. Clinic, Dr. Dayle Poitras, a newly graduated Métis vet excited about landing her first full-time gig; Savannah is keen to mentor young Dayle while learning about what it means to be Métis.

Professor Brian Cox explores how the universe began and how it will end.

Alaskans must overcome rising waters to capitalize on spring's offerings.

Meandering through the black waters of a primordial river immortalized in a folk song.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

Iceland is the world's largest volcanic island and new ground is born daily.

Meandering through the black waters of a primordial river immortalized in a folk song.

A bobcat kitten needs Hope's help but this little orphan causes big headaches.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

A bobcat kitten needs Hope's help but this little orphan causes big headaches.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

A bobcat kitten needs Hope's help but this little orphan causes big headaches.

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

Five months and more than 2000 miles into his journey, Lev is in Sudan, facing his biggest physical obstacle yet: the Sahara desert; he has to walk 1300 miles across one of the most inhospitable places on Earth.

Pursued by a group of Utahraptors, a gang of armored dinosaurs battles to reach adulthood.

Dr. Ann Jones ventures into the heart of Borneo's jungle to look for wild orangutan, following a team of dedicated scientists whose work is leading to new insights into one of the world's most intelligent and elusive great apes.

There's a new employee at Rocky Rapids Vet. Clinic, Dr. Dayle Poitras, a newly graduated Métis vet excited about landing her first full-time gig; Savannah is keen to mentor young Dayle while learning about what it means to be Métis.

Professor Brian Cox explores how the universe began and how it will end.

Alaskans must overcome rising waters to capitalize on spring's offerings.

Dara looks into the formation of the Sun and heads to Texas to witness a solar eclipse.

Sir David Attenborough reveals new animal behaviors in the ocean.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.

Dara looks into the formation of the Sun and heads to Texas to witness a solar eclipse.

Sir David Attenborough reveals new animal behaviors in the ocean.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

Hope Swinimer rescues, rehabilitates and releases thousands of animals while struggling to make ends meet.

Puzzle over an out-of-place relic from World War II and get a bird's-eye view of stone circles in Norway; examine mysterious, ancient mounds on the banks of the Mississippi and uncover the dark history of a medieval English village.

The highest tides in the world are found in the Bay of Fundy on Canada's east coast.

Hope Swinimer rescues, rehabilitates and releases thousands of animals while struggling to make ends meet.

Puzzle over an out-of-place relic from World War II and get a bird's-eye view of stone circles in Norway; examine mysterious, ancient mounds on the banks of the Mississippi and uncover the dark history of a medieval English village.

The highest tides in the world are found in the Bay of Fundy on Canada's east coast.

Hope Swinimer rescues, rehabilitates and releases thousands of animals while struggling to make ends meet.

A journey along Ireland's longest river, the Shannon, through an emerald green landscape of rolling hills and sparkling waters; how Vikings, monks and kings have all made their mark.

Dara looks into the formation of the Sun and heads to Texas to witness a solar eclipse.

Sir David Attenborough reveals new animal behaviors in the ocean.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.

Dara looks into the formation of the Sun and heads to Texas to witness a solar eclipse.

Sir David Attenborough reveals new animal behaviors in the ocean.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.