BBC Earth

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 space telescope Hipparcos led to a discovery that sent shockwaves throughout the astronomical community: a star appearing to be older than the universe itself.

A look at Isaac Newton;a visit to CERN.

Jupiter, Saturn, Uranus and Neptune all have exotic atmospheres, liquid interiors and rings.

The history of the solar system might be preserved out in the dark domain of Pluto and beyond.

The space telescope Hipparcos led to a discovery that sent shockwaves throughout the astronomical community: a star appearing to be older than the universe itself.

A look at Isaac Newton;a visit to CERN.

Jupiter, Saturn, Uranus and Neptune all have exotic atmospheres, liquid interiors and rings.

The history of the solar system might be preserved out in the dark domain of Pluto and beyond.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

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 journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

A moose on the loose raises a ruckus; a permanent resident becomes a lovable nuisance.

Encounter abandoned pods that may have been designed by alien architects; explore a mysterious concrete channel in Bosnia; weave through a complex of odd shapes in Greenland; meet the mythical guardian of a Vietnamese building.

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.

A moose on the loose raises a ruckus; a permanent resident becomes a lovable nuisance.

Encounter abandoned pods that may have been designed by alien architects; explore a mysterious concrete channel in Bosnia; weave through a complex of odd shapes in Greenland; meet the mythical guardian of a Vietnamese building.

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.

A moose on the loose raises a ruckus; a permanent resident becomes a lovable nuisance.

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

The space telescope Hipparcos led to a discovery that sent shockwaves throughout the astronomical community: a star appearing to be older than the universe itself.

A look at Isaac Newton;a visit to CERN.

Jupiter, Saturn, Uranus and Neptune all have exotic atmospheres, liquid interiors and rings.

The history of the solar system might be preserved out in the dark domain of Pluto and beyond.

The space telescope Hipparcos led to a discovery that sent shockwaves throughout the astronomical community: a star appearing to be older than the universe itself.

A look at Isaac Newton;a visit to CERN.

Jupiter, Saturn, Uranus and Neptune all have exotic atmospheres, liquid interiors and rings.

The history of the solar system might be preserved out in the dark domain of Pluto and beyond.

Trekking across the planet's most hostile frozen zone: Antarctica; getting to know ice.

A look at Isaac Newton;a visit to CERN.

Setting out on an odyssey across the Indian Ocean to see whether the hunters are adapting to the rapidly changing planet; traveling from the coast of South Africa to the Maldives, coming face-to-face with oceanic blacktip sharks.

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.

A look at Isaac Newton;a visit to CERN.

Setting out on an odyssey across the Indian Ocean to see whether the hunters are adapting to the rapidly changing planet; traveling from the coast of South Africa to the Maldives, coming face-to-face with oceanic blacktip sharks.

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

Encounter abandoned pods that may have been designed by alien architects; explore a mysterious concrete channel in Bosnia; weave through a complex of odd shapes in Greenland; meet the mythical guardian of a Vietnamese building.

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.

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

The mercury drops, but things heat up for Hope; an elusive creature is caught on tape; an impaled gull inspires a dramatic rescue.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

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.

The mercury drops, but things heat up for Hope; an elusive creature is caught on tape; an impaled gull inspires a dramatic rescue.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

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.

The mercury drops, but things heat up for Hope; an elusive creature is caught on tape; an impaled gull inspires a dramatic rescue.

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

Trekking across the planet's most hostile frozen zone: Antarctica; getting to know ice.

A look at Isaac Newton;a visit to CERN.

Setting out on an odyssey across the Indian Ocean to see whether the hunters are adapting to the rapidly changing planet; traveling from the coast of South Africa to the Maldives, coming face-to-face with oceanic blacktip sharks.

The mercury drops, but things heat up for Hope; an elusive creature is caught on tape; an impaled gull inspires a dramatic rescue.

A look at Isaac Newton;a visit to CERN.

Setting out on an odyssey across the Indian Ocean to see whether the hunters are adapting to the rapidly changing planet; traveling from the coast of South Africa to the Maldives, coming face-to-face with oceanic blacktip sharks.

Contemplate the unknown and learn why everything seen, felt, or touched adds up to just five percent of everything there is; join Professor Tamara Davis and leading scientists as they hunt for the unseen parts of the universe.

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.

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

Contemplate the unknown and learn why everything seen, felt, or touched adds up to just five percent of everything there is; join Professor Tamara Davis and leading scientists as they hunt for the unseen parts of the universe.

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.

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

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

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

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.

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

Hope revisits a completely rebuilt rehab and reveals new plans; Hope and Barry discover a problem plaguing massive marine mammals.

An enormous fiery vortex in Redding, Calif.; the island nation of Malta loses a natural treasure; a mysterious radioactive hotspot is discovered near Chernobyl; an unknown force lays waste to a mountain forest in Italian Alps.

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

Hope revisits a completely rebuilt rehab and reveals new plans; Hope and Barry discover a problem plaguing massive marine mammals.

An enormous fiery vortex in Redding, Calif.; the island nation of Malta loses a natural treasure; a mysterious radioactive hotspot is discovered near Chernobyl; an unknown force lays waste to a mountain forest in Italian Alps.

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

Hope revisits a completely rebuilt rehab and reveals new plans; Hope and Barry discover a problem plaguing massive marine mammals.

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 Yucatán shelter Mexico's largest predator, Morelet's crocodile.

Contemplate the unknown and learn why everything seen, felt, or touched adds up to just five percent of everything there is; join Professor Tamara Davis and leading scientists as they hunt for the unseen parts of the universe.

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 gripping journey through time unravels the hidden secrets of the Ice Age and how it created the world everyone lives in.

Contemplate the unknown and learn why everything seen, felt, or touched adds up to just five percent of everything there is; join Professor Tamara Davis and leading scientists as they hunt for the unseen parts of the universe.

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.

Levison and Alberto begin their journey on the northern shores of Mexico's Yucatán Peninsula.

After seven months walking, Lev reaches his final country: Egypt; he has 900 miles to go to the Mediterranean, but the authorities give him just 45 days to finish.

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

Levison and Alberto begin their journey on the northern shores of Mexico's Yucatán Peninsula.