BBC Earth

Scientists uncover clues at a fossil dig site in North Dakota that reveal details about the day an asteroid struck Earth and wiped out the dinosaurs.

Exploring fossils from a North Dakota site that may reveal what happened when an asteroid struck Earth and wiped out the dinosaurs.

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.

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.

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 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.

Hitting the streets in Canada's biggest city.

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.

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.

Hitting the streets in Canada's biggest city.

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.

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.

Hitting the streets in Canada's biggest city.

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.

In northern Queensland, nature nerd Ann Jones comes face to face with one of Australia's mightiest predators, the bull shark; she discovers there's much more to them than meets the eye.

A look at Dr. Savannah's practice and what she's learning about Metis culture.

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.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

In northern Queensland, nature nerd Ann Jones comes face to face with one of Australia's mightiest predators, the bull shark; she discovers there's much more to them than meets the eye.

A look at Dr. Savannah's practice and what she's learning about Metis culture.

Scientists uncover clues at a fossil dig site in North Dakota that reveal details about the day an asteroid struck Earth and wiped out the dinosaurs.

Exploring fossils from a North Dakota site that may reveal what happened when an asteroid struck Earth and wiped out the dinosaurs.

Dara's journey starts in Sicily, home to the mighty Mount Etna - Europe's largest volcano; a journey from Etna to Vesuvius to witness fearsome natural wonders.

The team travels to every corner of the planet over the course of five years.

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.

Dara's journey starts in Sicily, home to the mighty Mount Etna - Europe's largest volcano; a journey from Etna to Vesuvius to witness fearsome natural wonders.

The team travels to every corner of the planet over the course of five years.

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.

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.

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.

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 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.

Hope fights a problem that kills millions of birds each year in Chicago.

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.

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

Hope fights a problem that kills millions of birds each year in Chicago.

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.

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

Hope fights a problem that kills millions of birds each year in Chicago.

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

Dara's journey starts in Sicily, home to the mighty Mount Etna - Europe's largest volcano; a journey from Etna to Vesuvius to witness fearsome natural wonders.

The team travels to every corner of the planet over the course of five years.

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.

Dara's journey starts in Sicily, home to the mighty Mount Etna - Europe's largest volcano; a journey from Etna to Vesuvius to witness fearsome natural wonders.

The team travels to every corner of the planet over the course of five years.

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.

Simon revisits the incredible characters he's met during his travels.

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.

Simon revisits the incredible characters he's met during his travels.

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.