The Time Compass

Albert Lin travels to the famous Machu Picchu, where LiDAR technology reveals evidence of an even older civilisation's involvement.

In this episode, we explore the changing role of the Windsors' relationship to the Commonwealth and the political upheaval in the world during the 60s and 70s. Former colonies move to independence, often bringing violence. Tours to these parts of the world are under threat and the British and other former colonial powers struggle to come to terms with a new world order and diminished power.

In November 1919, a hardy fleet of aviators took off from England in a pioneering attempt to fly across the planet, to Australia. Many didn't make it. Twenty-eight days later, Ross Smith and his crew landed in Darwin, winning the great air race. This documentary celebrates the centenary of that landmark race. The flight was as awe-inspiring in its day as man landing on the moon 50 years later.