Accompanied by his old friend and guide Binod, Levison tracks the mountains from eastern Nepal into the country of Bhutan.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

As winter comes to an end, Alaskans journey, hunt, and prepare for spring.

Dive into the historical and natural secrets of the deep; explore an uninhabited concrete island, ocean spirals off the Australian coast, underwater evidence of a violent past and tracks thousands of metres below the sea's surface.

On Zambia's plains, a cheetah mother and her three growing daughters must travel thousands of kilometers every year to roam their vast territory searching for food; new challenges arise as the wet season arrives and floodwaters advance.

As winter comes to an end, Alaskans journey, hunt, and prepare for spring.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

Ireland is small in size but epic in wonder; surrounded by the Atlantic ocean, 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.

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

Ireland is small in size but epic in wonder; surrounded by the Atlantic ocean, 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.

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

Some tasks in the Arctic require remote Alaskans to venture off trail.

Levison resumes his journey in Nepal, visiting a crash site 150 meters down a steep cliff.

Extreme locales include Mount Everest's Khumbu Icefall, the Grand Canyon, and the slopes of Mount Kilimanjaro.

Some tasks in the Arctic require remote Alaskans to venture off trail.

Levison resumes his journey in Nepal, visiting a crash site 150 meters down a steep cliff.

Accompanied by his old friend and guide Binod, Levison tracks the mountains from eastern Nepal into the country of Bhutan.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

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 & elusive great apes.

Steve is in search of bait balls; these wildlife events can be seen from space, but they are not easy to find.

The trio heads to Thailand where they join an ancient nomadic tribe called the Sea Gypsies.

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.

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 & elusive great apes.

Steve is in search of bait balls; these wildlife events can be seen from space, but they are not easy to find.

The trio heads to Thailand where they join an ancient nomadic tribe called the Sea Gypsies.

Ireland is small in size but epic in wonder; surrounded by the Atlantic ocean, 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.

Some tasks in the Arctic require remote Alaskans to venture off trail.

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

Extreme locales include Mount Everest's Khumbu Icefall, the Grand Canyon, and the slopes of Mount Kilimanjaro.

Some tasks in the Arctic require remote Alaskans to venture off trail.

When a worldwide pandemic cripples the rehab, wildlife emergencies keep coming in: a bobcat that's been shot, and a massive adult seal; Hope's down to a skeleton crew as critical team members go into quarantine.

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.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

When a worldwide pandemic cripples the rehab, wildlife emergencies keep coming in: a bobcat that's been shot, and a massive adult seal; Hope's down to a skeleton crew as critical team members go into quarantine.

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.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

When a worldwide pandemic cripples the rehab, wildlife emergencies keep coming in: a bobcat that's been shot, and a massive adult seal; Hope's down to a skeleton crew as critical team members go into quarantine.

Alaskans contend with the throes of the warm season in the Arctic.

Accompanied by his old friend and guide Binod, Levison tracks the mountains from eastern Nepal into the country of Bhutan.

Wonders created by the power of water include Victoria Falls, where men take risks to reach fishing pools; the Camargue, where a man duels with a bull; ocean reefs.

Alaskans contend with the throes of the warm season in the Arctic.

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 & elusive great apes.

Steve is in search of bait balls; these wildlife events can be seen from space, but they are not easy to find.

Following early Homo sapiens's ancestors as they step out of Africa and venture into the wider world, into areas inhabited by other human species.

Face off with giant squid, megalodons, and other supersize sea predators.

Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

Alaskans contend with the throes of the warm season in the Arctic.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

Wonders created by the power of water include Victoria Falls, where men take risks to reach fishing pools; the Camargue, where a man duels with a bull; ocean reefs.

Alaskans contend with the throes of the warm season in the Arctic.

The first mammal of the year is born.

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

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

The first mammal of the year is born.

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

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

The first mammal of the year is born.

Alaskans harness the power of the sun as they toil through summer.

The trio heads to Thailand where they join an ancient nomadic tribe called the Sea Gypsies.

Wonders created by life itself include the Amazon forest; a father and son brave killer bees in Bangladesh.

Alaskans harness the power of the sun as they toil through summer.

Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

As daylight fades, Alaskans contend with threats lurking in the shadows.

Shocking new insights into the demise of modern humans' sister species, the Neanderthals, Homo sapiens's possible role in their downfall and how it become the last human species on Earth.

Face off with giant squid, megalodons, and other supersize sea predators.

As daylight fades, Alaskans contend with threats lurking in the shadows.

Shocking new insights into the demise of modern humans' sister species, the Neanderthals, Homo sapiens's possible role in their downfall and how it become the last human species on Earth.

The trio heads to Thailand where they join an ancient nomadic tribe called the Sea Gypsies.

Alaskans harness the power of the sun as they toil through summer.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Wonders created by life itself include the Amazon forest; a father and son brave killer bees in Bangladesh.

Alaskans harness the power of the sun as they toil through summer.

Hope struggles to save a seal for the first time.

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

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

Hope struggles to save a seal for the first time.

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

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

Hope struggles to save a seal for the first time.

Alaskans must capitalize on the resources of the Arctic Summer.

Explorer Levison Wood tracks down some of the planet's most iconic but threatened animals; travelling into some of the most remote environments on Earth, Levison enters their worlds as the locals do to get as up close and personal as possible.

People surviving in the high Himalaya, the Canadian Arctic, and the blistering Australian outback.

Alaskans must capitalize on the resources of the Arctic Summer.

Face off with giant squid, megalodons, and other supersize sea predators.

As daylight fades, Alaskans contend with threats lurking in the shadows.

Shocking new insights into the demise of modern humans' sister species, the Neanderthals, Homo sapiens's possible role in their downfall and how it become the last human species on Earth.

From space, satellite cameras reveal that Earth is a kaleidoscope of color; turquoise plankton blooms trigger a feeding frenzy, China turns yellow with rapeseed flowers, and mysterious green lights appear in the ocean.

Professor Brian Cox grapples with science's darker side, asking why it often gets such a bad press; Brian wonders if science can go too far.

From space, satellite cameras reveal that Earth is a kaleidoscope of color; turquoise plankton blooms trigger a feeding frenzy, China turns yellow with rapeseed flowers, and mysterious green lights appear in the ocean.

Professor Brian Cox grapples with science's darker side, asking why it often gets such a bad press; Brian wonders if science can go too far.

Alaskans must capitalize on the resources of the Arctic Summer.

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

People surviving in the high Himalaya, the Canadian Arctic, and the blistering Australian outback.

Alaskans must capitalize on the resources of the Arctic Summer.

When a Category 2 hurricane slams straight into the rehab, Hope and her team struggle to protect their patients in the middle of the raging storm.

Dive into the historical and natural secrets of the deep; explore an uninhabited concrete island, ocean spirals off the Australian coast, underwater evidence of a violent past and tracks thousands of metres below the sea's surface.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

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.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

The first mammal of the year is born.

Wonders created by the power of water include Victoria Falls, where men take risks to reach fishing pools; the Camargue, where a man duels with a bull; ocean reefs.

Wonders created by life itself include the Amazon forest; a father and son brave killer bees in Bangladesh.

Extreme locales include Mount Everest's Khumbu Icefall, the Grand Canyon, and the slopes of Mount Kilimanjaro.

Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

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.

David Attenborough joins a team of researchers in their efforts to discover the secrets of a 200-million-year-old giant sea dragon fossil.

Professor Brian Cox traces the development of the four rocky worlds closest to the sun: Mercury, Venus, Earth and Mars; born together, they battled the unbelievable violence of the early solar system to become stable planets.

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 & elusive great apes.

David Attenborough joins a team of researchers in their efforts to discover the secrets of a 200-million-year-old giant sea dragon fossil.

Professor Brian Cox traces the development of the four rocky worlds closest to the sun: Mercury, Venus, Earth and Mars; born together, they battled the unbelievable violence of the early solar system to become stable planets.

Steve heads into Yucatan, Mexico, on the trail of the ancient Maya, uncovering secrets and artifacts.

David Attenborough joins a team of researchers in their efforts to discover the secrets of a 200-million-year-old giant sea dragon fossil.

Professor Brian Cox traces the development of the four rocky worlds closest to the sun: Mercury, Venus, Earth and Mars; born together, they battled the unbelievable violence of the early solar system to become stable planets.

Steve heads into Yucatan, Mexico, on the trail of the ancient Maya, uncovering secrets and artifacts.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

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

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

Hope struggles to save a seal for the first time.

Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

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 & elusive great apes.

Steve is in search of bait balls; these wildlife events can be seen from space, but they are not easy to find.

Levison resumes his journey in Nepal, visiting a crash site 150 meters down a steep cliff.

Accompanied by his old friend and guide Binod, Levison tracks the mountains from eastern Nepal into the country of Bhutan.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

The male penguins hand over their newborns to the returning females.

Seeking a mate, leopard Olimba begins a new chapter, but in her way is her daughter; the hyenas' strength is growing, but a flooded den spells disaster, and the clan become separated.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

The male penguins hand over their newborns to the returning females.

Seeking a mate, leopard Olimba begins a new chapter, but in her way is her daughter; the hyenas' strength is growing, but a flooded den spells disaster, and the clan become separated.

On Zambia's plains, a cheetah mother and her three growing daughters must travel thousands of kilometers every year to roam their vast territory searching for food; new challenges arise as the wet season arrives and floodwaters advance.

Extreme locales include Mount Everest's Khumbu Icefall, the Grand Canyon, and the slopes of Mount Kilimanjaro.

Wonders created by the power of water include Victoria Falls, where men take risks to reach fishing pools; the Camargue, where a man duels with a bull; ocean reefs.

Wonders created by life itself include the Amazon forest; a father and son brave killer bees in Bangladesh.

People surviving in the high Himalaya, the Canadian Arctic, and the blistering Australian outback.

A new volunteer and a raven become roommates at the rehab.

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.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

A new volunteer and a raven become roommates at the rehab.

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.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

A new volunteer and a raven become roommates at the rehab.

The warm season provides for Alaskans.

From space, satellite cameras reveal that Earth is a kaleidoscope of color; turquoise plankton blooms trigger a feeding frenzy, China turns yellow with rapeseed flowers, and mysterious green lights appear in the ocean.

In many of the world's natural wonders there is an abundance of animals, which can either be a threat to the people who live there or provide a means of survival.

The warm season provides for Alaskans.

Seeking a mate, leopard Olimba begins a new chapter, but in her way is her daughter; the hyenas' strength is growing, but a flooded den spells disaster, and the clan become separated.

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 & elusive great apes.

Steve is in search of bait balls; these wildlife events can be seen from space, but they are not easy to find.

Shocking new insights into the demise of modern humans' sister species, the Neanderthals, Homo sapiens's possible role in their downfall and how it become the last human species on Earth.

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

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.

The dangerous journey of the Pachyrhinosaurus, where survival is at stake during the annual migration hundreds of miles north.

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

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.

The dangerous journey of the Pachyrhinosaurus, where survival is at stake during the annual migration hundreds of miles north.

The warm season provides for Alaskans.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

In many of the world's natural wonders there is an abundance of animals, which can either be a threat to the people who live there or provide a means of survival.

The warm season provides for Alaskans.

Something big and brown is headed to "Hope for Wildlife," but this black bear is tied up in red tape.

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

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

Something big and brown is headed to "Hope for Wildlife," but this black bear is tied up in red tape.

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

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

Something big and brown is headed to "Hope for Wildlife," but this black bear is tied up in red tape.

In summer's home stretch, family ties run deep; Cole hunts for protein in the rain; Jessie gathers the last of the warm weather bounty; the Hailstones track shy prey; Ricko's legacy project.

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

In some natural wonders people push themselves to the limit, and survival requires skill, ingenuity and bravery.

In summer's home stretch, family ties run deep; Cole hunts for protein in the rain; Jessie gathers the last of the warm weather bounty; the Hailstones track shy prey; Ricko's legacy project.

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

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.

The dangerous journey of the Pachyrhinosaurus, where survival is at stake during the annual migration hundreds of miles north.

In Moreton Bay, Dr Ann gets in the water with a dugong as part of the world's largest dugong health check. A critical mission to help save the species globally. She learns that many dugong secrets can be found in their poo!

Steve goes in search of the deadliest cats in Africa in the carnivore capital of Zambia; he gets up close to the rulers of the savanna, the lions and leopards.

The crew takes on an adrenaline-filled fishing trip in Scotland.

Seeking a mate, leopard Olimba begins a new chapter, but in her way is her daughter; the hyenas' strength is growing, but a flooded den spells disaster, and the clan become separated.

In Moreton Bay, Dr Ann gets in the water with a dugong as part of the world's largest dugong health check. A critical mission to help save the species globally. She learns that many dugong secrets can be found in their poo!

Steve goes in search of the deadliest cats in Africa in the carnivore capital of Zambia; he gets up close to the rulers of the savanna, the lions and leopards.

The crew takes on an adrenaline-filled fishing trip in Scotland.

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

In summer's home stretch, family ties run deep; Cole hunts for protein in the rain; Jessie gathers the last of the warm weather bounty; the Hailstones track shy prey; Ricko's legacy project.

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

In some natural wonders people push themselves to the limit, and survival requires skill, ingenuity and bravery.

In summer's home stretch, family ties run deep; Cole hunts for protein in the rain; Jessie gathers the last of the warm weather bounty; the Hailstones track shy prey; Ricko's legacy project.

A daring deer rescue is captured on camera.

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

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

A daring deer rescue is captured on camera.

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

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

A daring deer rescue is captured on camera.

With summer nearing its end, Alaskans kick into high gear.

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.

Asia has the longest coastline of any continent, rich coral reefs, and never-seen-before animal behavior; exploring Asia's diverse waters.

With summer nearing its end, Alaskans kick into high gear.

In Moreton Bay, Dr Ann gets in the water with a dugong as part of the world's largest dugong health check. A critical mission to help save the species globally. She learns that many dugong secrets can be found in their poo!

Steve goes in search of the deadliest cats in Africa in the carnivore capital of Zambia; he gets up close to the rulers of the savanna, the lions and leopards.

Shocking new insights into the demise of modern humans' sister species, the Neanderthals, Homo sapiens's possible role in their downfall and how it become the last human species on Earth.

The male penguins hand over their newborns to the returning females.

After tough early months, the penguin chicks are becoming more independent and are often left behind as their parents fish; follow along as they leave the security of home to return many years later to the same spot to breed.

Exploring forests as hidden worlds where the lives of animals are entwined, including temperate forests home to whistling wild dogs, as well as rainforests where ninja treehoppers fight off assassin bugs.

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

After tough early months, the penguin chicks are becoming more independent and are often left behind as their parents fish; follow along as they leave the security of home to return many years later to the same spot to breed.

Exploring forests as hidden worlds where the lives of animals are entwined, including temperate forests home to whistling wild dogs, as well as rainforests where ninja treehoppers fight off assassin bugs.

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

With summer nearing its end, Alaskans kick into high gear.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

Asia has the longest coastline of any continent, rich coral reefs, and never-seen-before animal behavior; exploring Asia's diverse waters.

With summer nearing its end, Alaskans kick into high gear.

Hitting the streets in Canada's biggest city.

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

Examine strange relics forgotten by time; visit a perturbing circle of stone in the Golan Heights; a mountain of headless statues in Turkey; a castle left to crumble in the Saudi Arabian desert; a time-worn secret in the wilds of Peru.

Hitting the streets in Canada's biggest city.

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

Examine strange relics forgotten by time; visit a perturbing circle of stone in the Golan Heights; a mountain of headless statues in Turkey; a castle left to crumble in the Saudi Arabian desert; a time-worn secret in the wilds of Peru.

Hitting the streets in Canada's biggest city.

Alaskans power through the dog days of summer.

The crew takes on an adrenaline-filled fishing trip in Scotland.

Asia is the most mountainous continent on earth; from the tropical south to its barren centre, its highest places are home to some of our planet's most remarkable wildlife.

Alaskans power through the dog days of summer.

After tough early months, the penguin chicks are becoming more independent and are often left behind as their parents fish; follow along as they leave the security of home to return many years later to the same spot to breed.

Exploring forests as hidden worlds where the lives of animals are entwined, including temperate forests home to whistling wild dogs, as well as rainforests where ninja treehoppers fight off assassin bugs.

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