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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
Through the Wormhole Season 7
Through the Wormhole Season 7

   2016    Culture
Enemies of Reason
Enemies of Reason

      Medicine
Catalyst
Catalyst

   2017    Science
Life Story
Life Story

   2014    Nature
Generation Iron
Generation Iron

   2017    Culture