In 1975, an expedition led by Chris Bonington set out to achieve the impossible. To climb the south-west face of Everest, and put the very first British mountaineers on her summit.

S2 E4 — Constantinople: The Emperor's Last Stand
Sultan Mehmed leads an army, and a stunning new superweapon, against a last remnant of Christianity.

For the first time the extent of the Duke of Windsor's treachery during World War II is revealed, not just sympathising with the enemy but, as new evidence reveals, actively collaborating.

The stories of women who helped win World War II, including those who risked their lives flying planes, served as American spies and in the all-African American Central Postal battalion.

In 1975, an expedition led by Chris Bonington set out to achieve the impossible. To climb the south-west face of Everest, and put the very first British mountaineers on her summit.

For the first time the extent of the Duke of Windsor's treachery during World War II is revealed, not just sympathising with the enemy but, as new evidence reveals, actively collaborating.

The stories of women who helped win World War II, including those who risked their lives flying planes, served as American spies and in the all-African American Central Postal battalion.

S1 E3 — The Heat Is On
Heat in Portland, Ore.; exploring why some urban areas are hotter than others in Medellín, Colombia; a visit to Phoenix -- the hottest city in the U.S.

Presenting the latest products live on television that can be ordered directly. The product range extends from vacuum cleaners and bath towels to sports equipment.

Presenting the latest products live on television that can be ordered directly. The product range extends from vacuum cleaners and bath towels to sports equipment.

S1 E5 — Not Business As Usual
Positive climate tipping points; a supercomputer in Cheyenne, Wyo., shows how climate systems are predicted and analysed; a Michigan coal plant makes progress in the transition to renewables; climate challenges and vulnerabilities across the U.S.

A remarkable story both of heroism and mankind's failings - and one of the worst atrocities carried out by Germany during the Second World War. (S).

A unique window into a bygone era when a thrilling new invention, the motion picture camera, first captured the nation on film. Offering a rare portrait of a powerful and prosperous nation and Empire on the cusp of great change.

S1 E1 — Episode 1
Edwardian Britain was the richest and most powerful country in the world. By looking at footage, this is an exploration into what this meant for the men, women and children hard at work in the mills and the mines.

S1 E2 — Episode 2
Vivid colourised footage shows the creation of mass leisure, the suffrage movement, and the beginnings of world war. The Edwardians demanded change, and it came but in a way that few could foresee.

S1 E5 — Not Business As Usual
Positive climate tipping points; a supercomputer in Cheyenne, Wyo., shows how climate systems are predicted and analysed; a Michigan coal plant makes progress in the transition to renewables; climate challenges and vulnerabilities across the U.S.

A unique window into a bygone era when a thrilling new invention, the motion picture camera, first captured the nation on film. Offering a rare portrait of a powerful and prosperous nation and Empire on the cusp of great change.

S1 E1 — Episode 1
Edwardian Britain was the richest and most powerful country in the world. By looking at footage, this is an exploration into what this meant for the men, women and children hard at work in the mills and the mines.

S1 E2 — Episode 2
Vivid colourised footage shows the creation of mass leisure, the suffrage movement, and the beginnings of world war. The Edwardians demanded change, and it came but in a way that few could foresee.

A unique window into a bygone era when a thrilling new invention, the motion picture camera, first captured the nation on film. Offering a rare portrait of a powerful and prosperous nation and Empire on the cusp of great change.