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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
The Climate Wars
The Climate Wars

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Wings
Wings

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Tales by Light Season 2
Tales by Light Season 2

   2017    Nature
A Traveler Guide to the Planets
A Traveler Guide to the Planets

   2010    Science
Evolution
Evolution

   2004    Science
The Beauty of Maps
The Beauty of Maps

   2010    Art
Ancient Rome
Ancient Rome

   2006    History
Life
Life

   2009    Nature