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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
Apocalypse: World War 1
Apocalypse: World War 1

   2014    History
History of the Eagles
History of the Eagles

   2013    History
Heavens Gate
Heavens Gate

   2020    Culture
Natural World
Natural World

   2015    Nature
Minimalism
Minimalism

   2015    Culture
Tiger
Tiger

   2020    History
Magic Numbers
Magic Numbers

   2018    Science