Smithsonian Channel

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Going behind the scenes with the Panama Canal Railway; big track repairs, massive machines, and unrelenting deadlines.

Visiting London's Gherkin, Seattle's Evergreen Point Floating Bridge and Lyon's Musée des Confluences to uncover how and why they were built.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Going behind the scenes with the Panama Canal Railway; big track repairs, massive machines, and unrelenting deadlines.

Visiting London's Gherkin, Seattle's Evergreen Point Floating Bridge and Lyon's Musée des Confluences to uncover how and why they were built.

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.

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.

Arctic conditions continue to wreak havoc in British Columbia; Jeremy Birch is called upon to raise a concrete-hulled vessel.

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.

The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

Paid programming.

Arctic conditions continue to wreak havoc in British Columbia; Jeremy Birch is called upon to raise a concrete-hulled vessel.

The Navy's U.S.S. Macon flew in the 1930's, the golden age of airships, and was able to both launch and recover airplanes; telling the lost story of America's airships, their rapid rise, tragic demise, and the bold experiments in between.

Eye-witness accounts from those who fought in the US military's bloodiest battle on the European front in World War II.

The history of the B-1 Lancer reveals how the Cold War bomber evolved to become one of Americas most effective military aircraft.

The Allies plan their landing in Normandy and devise a diversionary operation in the north; commando attacks continue and the resistance becomes more active; Hitler continues his building projects.

A different view of the events in the Arctic during World War II, with unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

The Navy's U.S.S. Macon flew in the 1930's, the golden age of airships, and was able to both launch and recover airplanes; telling the lost story of America's airships, their rapid rise, tragic demise, and the bold experiments in between.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Visiting London's Gherkin, Seattle's Evergreen Point Floating Bridge and Lyon's Musée des Confluences to uncover how and why they were built.

A bush airport fights fire with fire; flying Namibian cowboys race against the heat to save antelope from drought; a father and son duo of mechanics tackle a test that can make or break their careers, and an endangered Pangolin.

An orphaned bear cub flies to a new home, bush pilots bring life-saving medical machinery to a remote village, record snowfall threatens to close down Anchorage Airport for Thanksgiving, and the US Army prepares for airborne war.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

A bush airport fights fire with fire; flying Namibian cowboys race against the heat to save antelope from drought; a father and son duo of mechanics tackle a test that can make or break their careers, and an endangered Pangolin.

An orphaned bear cub flies to a new home, bush pilots bring life-saving medical machinery to a remote village, record snowfall threatens to close down Anchorage Airport for Thanksgiving, and the US Army prepares for airborne war.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

A bush airport fights fire with fire; flying Namibian cowboys race against the heat to save antelope from drought; a father and son duo of mechanics tackle a test that can make or break their careers, and an endangered Pangolin.

An orphaned bear cub flies to a new home, bush pilots bring life-saving medical machinery to a remote village, record snowfall threatens to close down Anchorage Airport for Thanksgiving, and the US Army prepares for airborne war.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

A bush airport fights fire with fire; flying Namibian cowboys race against the heat to save antelope from drought; a father and son duo of mechanics tackle a test that can make or break their careers, and an endangered Pangolin.

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.

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.

Phil Risko's team at Northstar works fast to refloat a trawler that's been blown onto the shore of a national park in New Jersey; the team improvises to get it back to sea before it suffers further damage.

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.

The search for water is actually the search for life, and that search is taking man to some unusual places, including a moon of Saturn.

Paid programming.

Phil Risko's team at Northstar works fast to refloat a trawler that's been blown onto the shore of a national park in New Jersey; the team improvises to get it back to sea before it suffers further damage.

Take a look at some of the escapes that took place during World War II.

The history of the B-1 Lancer reveals how the Cold War bomber evolved to become one of Americas most effective military aircraft.

Takes a look inside the Pyramid of Menkaure and its unfinished bicolor monument, including a chamber made entirely of graphite and a sarcophagus buried at sea.

Tallying the carnage that followed the disappearance of a Russian wonder; exploring Incan sacrificial rituals; studying a global rivalry sparked by an Egyptian stone; seeing the haunting paintings of a Spanish artist who descended into madness.

Egyptologists try to determine who built the Sphinx and why by exploring the power struggles between Khufu's sons after the pharaoh's death.

A bush airport fights fire with fire; flying Namibian cowboys race against the heat to save antelope from drought; a father and son duo of mechanics tackle a test that can make or break their careers, and an endangered Pangolin.

An orphaned bear cub flies to a new home, bush pilots bring life-saving medical machinery to a remote village, record snowfall threatens to close down Anchorage Airport for Thanksgiving, and the US Army prepares for airborne war.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

In May 1941, the British Royal Navy relentlessly pursues the formidable battleship Bismarck with the mission to sink it at any cost.

New high-tech investigations uncover what sunk a World War I cruiser, a World War II submarine, a British destroyer from the Falklands War, and more.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

In May 1941, the British Royal Navy relentlessly pursues the formidable battleship Bismarck with the mission to sink it at any cost.

New high-tech investigations uncover what sunk a World War I cruiser, a World War II submarine, a British destroyer from the Falklands War, and more.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

Egyptologists try to determine who built the Sphinx and why by exploring the power struggles between Khufu's sons after the pharaoh's death.

New high-tech investigations uncover what sunk a World War I cruiser, a World War II submarine, a British destroyer from the Falklands War, and more.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

Egyptologists try to determine who built the Sphinx and why by exploring the power struggles between Khufu's sons after the pharaoh's death.

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.

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.

At the mouth of the Suez Canal, Lino Arosemena and his crew have a monster repair job of removing and refitting a 20-ton propeller.

The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

Paid programming.

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.

At the mouth of the Suez Canal, Lino Arosemena and his crew have a monster repair job of removing and refitting a 20-ton propeller.

A bush airport fights fire with fire; flying Namibian cowboys race against the heat to save antelope from drought; a father and son duo of mechanics tackle a test that can make or break their careers, and an endangered Pangolin.

A look at how the post-war period and the Cold War unfolded high up in the North; recently published archival material helps to shed light on post-war events in the Arctic.

The Navy's U.S.S. Macon flew in the 1930's, the golden age of airships, and was able to both launch and recover airplanes; telling the lost story of America's airships, their rapid rise, tragic demise, and the bold experiments in between.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

In May 1941, the British Royal Navy relentlessly pursues the formidable battleship Bismarck with the mission to sink it at any cost.

New high-tech investigations uncover what sunk a World War I cruiser, a World War II submarine, a British destroyer from the Falklands War, and more.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

Visiting Australia's One Central Park, the Oslo Opera House and the California Academy of Sciences in San Francisco to reveal their architectural secrets.

Takes a look inside the Pyramid of Menkaure and its unfinished bicolor monument, including a chamber made entirely of graphite and a sarcophagus buried at sea.

The world has its focus on the Pyramid of Khufu in Egypt, but nearby on the Giza plateau, other architectural masterpieces stand the test of time.

Takes a look inside the Pyramid of Menkaure and its unfinished bicolor monument, including a chamber made entirely of graphite and a sarcophagus buried at sea.