Last Watched

"Lapis lazuli"  Sort by

Colours Of Earth

   2015    Science
In this episode, Helen seeks out the colours that turned planet Earth multicoloured. To investigate the essence of sunlight Helen travels to California to visit the largest solar telescope in the world. She discovers how the most vivid blue is formed from sulfur atoms deep within the Earth's crust and why the presence of red ochre is a key sign of life. In gold, she discovers why this most precious of metals shouldn't even exist on the surface of the planet and in white, Helen travels to one of the hottest places on Earth to explore the role salt and water played in shaping planet Earth.
Series: Colour The Spectrum of Science
Inside the Medieval Mind
Inside the Medieval Mind

   2008    History
Leaving Neverland
Leaving Neverland

   2019    Culture
Woody Allen A Documentary
Woody Allen A Documentary

   2011    History
Inside the World Toughest Prisons
Inside the World Toughest Prisons

   2020    Culture
Conquistadors
Conquistadors

   2002    History
Cosmos: A Spacetime Odyssey
Cosmos: A Spacetime Odyssey

   2014    Science
The Big Think
The Big Think

   2017    Technology